100,000,000 is what the number is called. Big numbers have big names

Countless different numbers surround us every day. Surely many people have at least once wondered what number is considered the largest. You can simply say to a child that this is a million, but adults understand perfectly well that other numbers follow a million. For example, all you have to do is add one to a number each time, and it will become larger and larger - this happens ad infinitum. But if you look at the numbers that have names, you can find out what the largest number in the world is called.

The appearance of number names: what methods are used?

Today there are 2 systems according to which names are given to numbers - American and English. The first is quite simple, and the second is the most common throughout the world. The American one allows you to give names to large numbers as follows: first, the ordinal number in Latin is indicated, and then the suffix “million” is added (the exception here is million, meaning a thousand). This system is used by Americans, French, Canadians, and it is also used in our country.

English is widely used in England and Spain. According to it, numbers are named as follows: the numeral in Latin is “plus” with the suffix “illion”, and the next (a thousand times larger) number is “plus” “billion”. For example, the trillion comes first, the trillion comes after it, the quadrillion comes after the quadrillion, etc.

Thus, the same number in different systems can mean different things; for example, an American billion in the English system is called a billion.

Extra-system numbers

In addition to the numbers that are written according to the known systems (given above), there are also non-systemic ones. They have their own names, which do not include Latin prefixes.

You can start considering them with a number called a myriad. It is defined as one hundred hundreds (10000). But according to its intended purpose, this word is not used, but is used as an indication of an innumerable multitude. Even Dahl's dictionary will kindly provide a definition of such a number.

Next after the myriad is a googol, denoting 10 to the power of 100. This name was first used in 1938 by the American mathematician E. Kasner, who noted that this name was invented by his nephew.

Google (search engine) got its name in honor of googol. Then 1 with a googol of zeros (1010100) represents a googolplex - Kasner also came up with this name.

Even larger than the googolplex is the Skuse number (e to the power of e to the power of e79), proposed by Skuse in his proof of the Rimmann conjecture about prime numbers (1933). There is another Skuse number, but it is used when the Rimmann hypothesis is not valid. Which one is greater is quite difficult to say, especially when it comes to large degrees. However, this number, despite its “hugeness,” cannot be considered the very best of all those that have their own names.

And the leader among the largest numbers in the world is the Graham number (G64). It was used for the first time to carry out proofs in the field of mathematical science (1977).

When it comes to such a number, you need to know that you cannot do without a special 64-level system created by Knuth - the reason for this is the connection of the number G with bichromatic hypercubes. Knuth invented the superdegree, and in order to make it convenient to record it, he proposed the use of up arrows. So we found out what the largest number in the world is called. It is worth noting that this number G was included in the pages of the famous Book of Records.

In everyday life, most people operate with fairly small numbers. Tens, hundreds, thousands, very rarely - millions, almost never - billions. A person’s usual idea of ​​quantity or magnitude is limited to approximately these numbers. Almost everyone has heard about trillions, but few have ever used them in any calculations.

What are they, giant numbers?

Meanwhile, numbers denoting powers of a thousand have been known to people for a long time. In Russia and many other countries, a simple and logical notation system is used:

Thousand;
Million;
Billion;
Trillion;
Quadrillion;
Quintillion;
Sextillion;
Septillion;
Octillion;
Quintillion;
Decillion.

In this system, each subsequent number is obtained by multiplying the previous one by a thousand. Billion is usually called billion.

Many adults can accurately write numbers such as a million - 1,000,000 and a billion - 1,000,000,000. A trillion is more difficult, but almost everyone can handle it - 1,000,000,000,000. And then begins territory unknown to many.

Let's take a closer look at the big numbers

However, there is nothing complicated, the main thing is to understand the system of formation of large numbers and the principle of naming. As already mentioned, each subsequent number is a thousand times greater than the previous one. This means that in order to correctly write the next number in ascending order, you need to add three more zeros to the previous one. That is, a million has 6 zeros, a billion has 9, a trillion has 12, a quadrillion has 15, and a quintillion has 18.

You can also figure out the names if you wish. The word "million" comes from the Latin "mille", which means "more than a thousand." The following numbers were formed by adding the Latin words "bi" (two), "tri" (three), "quad" (four), etc.

Now let's try to visualize these numbers clearly. Most people have a pretty good idea of ​​the difference between a thousand and a million. Everyone understands that a million rubles is good, but a billion is more. Much more. Also, everyone has the idea that a trillion is something absolutely immense. But how much more is a trillion than a billion? How big is it?

For many, beyond a billion the concept of “incomprehensible to the mind” begins. Indeed, a billion kilometers or a trillion - the difference is not very big in the sense that such a distance still cannot be covered in a lifetime. A billion rubles or a trillion is also not very different, because you still can’t earn that kind of money in your entire life. But let's do a little math using our imagination.

Russia's housing stock and four football fields as examples

For every person on earth there is a land area measuring 100x200 meters. This is approximately four football fields. But if there are not 7 billion people, but seven trillion, then everyone will only get a piece of land 4x5 meters. Four football fields versus the area of ​​the front garden in front of the entrance - this is the ratio of a billion to a trillion.

In absolute terms, the picture is also impressive.

If you take a trillion bricks, you can build more than 30 million one-story houses with an area of ​​100 square meters. That is, about 3 billion square meters of private development. This is comparable to the total housing stock of the Russian Federation.

If you build ten-story buildings, you will get approximately 2.5 million houses, that is, 100 million two- and three-room apartments, about 7 billion square meters of housing. This is 2.5 times more than the entire housing stock in Russia.

In a word, there are not a trillion bricks in all of Russia.

One quadrillion student notebooks will cover the entire territory of Russia with a double layer. And one quintillion of the same notebooks will cover the entire landmass with a layer 40 centimeters thick. If we manage to get a sextillion notebooks, then the entire planet, including the oceans, will be under a layer 100 meters thick.

Let's count to a decillion

Let's count some more. For example, a matchbox magnified a thousand times would be the size of a sixteen-story building. An increase of a million times will give a “box” that is larger in area than St. Petersburg. Enlarged a billion times, the boxes would not fit on our planet. On the contrary, the Earth will fit into such a “box” 25 times!

Increasing the box gives an increase in its volume. It will be almost impossible to imagine such volumes with further increase. For ease of perception, let's try to increase not the object itself, but its quantity, and arrange the matchboxes in space. This will make it easier to navigate. A quintillion boxes laid out in one row would stretch beyond the star α Centauri by 9 trillion kilometers.

Another thousandfold magnification (sextillion) would allow matchboxes lined up to span our entire Milky Way galaxy laterally. A septillion matchboxes would stretch over 50 quintillion kilometers. Light can travel such a distance in 5 million 260 thousand years. And the boxes laid out in two rows would stretch to the Andromeda galaxy.

There are only three numbers left: octillion, nonillion and decillion. You'll have to use your imagination. An octillion boxes form a continuous line of 50 sextillion kilometers. This is more than five billion light years. Not every telescope installed on one edge of such an object could see its opposite edge.

Shall we count further? A nonillion matchboxes would fill the entire space of the known part of the Universe with an average density of 6 pieces per cubic meter. By earthly standards, it doesn’t seem like a lot - 36 matchboxes in the back of a standard Gazelle. But a nonillion matchboxes would have a mass billions of times greater than the mass of all the material objects in the known Universe combined.

Decillion. The size, or rather even the majesty, of this giant from the world of numbers is difficult to imagine. Just one example - six decillion boxes would no longer fit in the entire part of the Universe accessible to humanity for observation.

The majesty of this number is even more striking if you do not multiply the number of boxes, but increase the object itself. A matchbox, magnified a decillion times, would contain the entire part of the Universe known to mankind 20 trillion times. It’s impossible to even imagine this.

Small calculations showed how huge the numbers are, known to mankind for several centuries. In modern mathematics, numbers many times greater than a decillion are known, but they are used only in complex mathematical calculations. Only professional mathematicians have to deal with such numbers.

The most famous (and smallest) of these numbers is the googol, denoted by one followed by one hundred zeros. A googol is greater than the total number of elementary particles in the visible part of the Universe. This makes googol an abstract number that has little practical use.

In the names of Arabic numbers, each digit belongs to its own category, and every three digits form a class. Thus, the last digit in a number indicates the number of units in it and is called, accordingly, the ones place. The next, second from the end, digit indicates the tens (tens place), and the third from the end digit indicates the number of hundreds in the number - the hundreds place. Further, the digits are also repeated in turn in each class, denoting units, tens and hundreds in the classes of thousands, millions, and so on. If the number is small and does not have a tens or hundreds digit, it is customary to take them as zero. Classes group digits in numbers of three, often placing a period or space between classes in computing devices or records to visually separate them. This is done to make large numbers easier to read. Each class has its own name: the first three digits are the class of units, then the class of thousands, then millions, billions (or billions) and so on.

Since we use the decimal system, the basic unit of quantity is ten, or 10 1. Accordingly, as the number of digits in a number increases, the number of tens also increases: 10 2, 10 3, 10 4, etc. Knowing the number of tens, you can easily determine the class and rank of the number, for example, 10 16 is tens of quadrillions, and 3 × 10 16 is three tens of quadrillions. The decomposition of numbers into decimal components occurs in the following way - each digit is displayed in a separate term, multiplied by the required coefficient 10 n, where n is the position of the digit from left to right.
For example: 253 981=2×10 6 +5×10 5 +3×10 4 +9×10 3 +8×10 2 +1×10 1

The power of 10 is also used in writing decimal fractions: 10 (-1) is 0.1 or one tenth. In a similar way to the previous paragraph, you can also expand a decimal number, n in this case will indicate the position of the digit from the decimal point from right to left, for example: 0.347629= 3×10 (-1) +4×10 (-2) +7×10 (-3) +6×10 (-4) +2×10 (-5) +9×10 (-6 )

Names of decimal numbers. Decimal numbers are read by the last digit after the decimal point, for example 0.325 - three hundred twenty-five thousandths, where the thousandth is the place of the last digit 5.

Table of names of large numbers, digits and classes

1st class unit 1st digit of the unit
2nd digit tens
3rd place hundreds		 1 = 10 0
10 = 10 1
100 = 10 2
2nd class thousand 1st digit of unit of thousands
2nd digit tens of thousands
3rd category hundreds of thousands		 1 000 = 10 3
10 000 = 10 4
100 000 = 10 5
3rd class millions 1st digit of unit of millions
2nd category tens of millions
3rd category hundreds of millions		 1 000 000 = 10 6
10 000 000 = 10 7
100 000 000 = 10 8
4th class billions 1st digit of unit of billions
2nd category tens of billions
3rd category hundreds of billions		 1 000 000 000 = 10 9
10 000 000 000 = 10 10
100 000 000 000 = 10 11
5th grade trillions 1st digit unit of trillions
2nd category tens of trillions
3rd category hundreds of trillions		 1 000 000 000 000 = 10 12
10 000 000 000 000 = 10 13
100 000 000 000 000 = 10 14
6th grade quadrillions 1st digit of the quadrillion unit
2nd rank tens of quadrillions
3rd digit tens of quadrillions		 1 000 000 000 000 000 = 10 15
10 000 000 000 000 000 = 10 16
100 000 000 000 000 000 = 10 17
7th grade quintillions 1st digit of quintillion unit
2nd category tens of quintillions
3rd digit hundred quintillion		 1 000 000 000 000 000 000 = 10 18
10 000 000 000 000 000 000 = 10 19
100 000 000 000 000 000 000 = 10 20
8th grade sextillions 1st digit of the sextillion unit
2nd rank tens of sextillions
3rd rank hundred sextillion		 1 000 000 000 000 000 000 000 = 10 21
10 000 000 000 000 000 000 000 = 10 22
1 00 000 000 000 000 000 000 000 = 10 23
9th grade septillions 1st digit of septillion unit
2nd category tens of septillions
3rd digit hundred septillion		 1 000 000 000 000 000 000 000 000 = 10 24
10 000 000 000 000 000 000 000 000 = 10 25
100 000 000 000 000 000 000 000 000 = 10 26
10th grade octillion 1st digit of the octillion unit
2nd digit tens of octillions
3rd digit hundred octillion		 1 000 000 000 000 000 000 000 000 000 = 10 27
10 000 000 000 000 000 000 000 000 000 = 10 28
100 000 000 000 000 000 000 000 000 000 = 10 29

It is known that an infinite number of numbers and only a few have their own names, because most numbers received names consisting of small numbers. The largest numbers need to be designated somehow.

"Short" and "long" scale

Number names used today began to receive in the fifteenth century, then the Italians first used the word million, meaning “large thousand,” bimillion (million squared) and trimillion (million cubed).

This system was described in his monograph by the Frenchman Nicolas Chuquet, he recommended using Latin numerals, adding the inflection “-million” to them, so bimillion became billion, and three million became trillion, and so on.

But according to the proposed system, he called the numbers between a million and a billion “a thousand millions.” It was not comfortable to work with such a gradation and in 1549 by the Frenchman Jacques Peletier advised to name the numbers located in the indicated interval, again using Latin prefixes, while introducing a different ending - “-billion”.

So 109 was called billion, 1015 - billiard, 1021 - trillion.

Gradually this system began to be used in Europe. But some scientists confused the names of the numbers, this created a paradox when the words billion and billion became synonymous. Subsequently, the United States created its own procedure for naming large numbers. According to him, the construction of names is carried out in a similar way, but only the numbers differ.

The previous system continued to be used in Great Britain, which is why it was called British, although it was originally created by the French. But already in the seventies of the last century, Great Britain also began to apply the system.

Therefore, in order to avoid confusion, the concept created by American scientists is usually called short scale, while the original French-British - long scale.

The short scale has found active use in the USA, Canada, Great Britain, Greece, Romania, and Brazil. In Russia it is also used, with only one difference - the number 109 is traditionally called a billion. But the French-British version was preferred in many other countries.

In order to denote numbers larger than a decillion, scientists decided to combine several Latin prefixes, so undecillion, quattordecillion and others were named. If you use Schuke system, then, according to it, giant numbers will receive the names “vigintillion”, “centillion” and “million” (103003), respectively, according to the long scale, such a number will receive the name “billion” (106003).

Numbers with unique names

Many numbers were named without reference to various systems and parts of words. There are a lot of these numbers, for example, this number "pi", a dozen, and numbers over a million.

IN Ancient Rus' its own numerical system has been used for a long time. Hundreds of thousands were designated by the word legion, a million were called leodromes, tens of millions were ravens, hundreds of millions were called a deck. This was the “small count,” but the “great count” used the same words, only they had a different meaning, for example, leodr could mean a legion of legions (1024), and a deck could mean ten ravens (1096).

It happened that children came up with names for numbers, so the mathematician Edward Kasner gave the idea young Milton Sirotta, who proposed to name the number with a hundred zeros (10100) simply "googol". This number received the greatest publicity in the nineties of the twentieth century, when the Google search engine was named in its honor. The boy also suggested the name “googloplex,” a number with a googol of zeros.

But Claude Shannon in the middle of the twentieth century, evaluating moves in a chess game, calculated that there were 10,118 of them, now this "Shannon number".

In the ancient work of Buddhists "Jaina Sutras", written almost twenty-two centuries ago, notes the number “asankheya” (10140), which is exactly how many cosmic cycles, according to Buddhists, are necessary to achieve nirvana.

Stanley Skuse described large quantities as "first Skewes number" equal to 10108.85.1033, and the “second Skewes number” is even more impressive and equals 1010101000.

Notations

Of course, depending on the number of degrees contained in a number, it becomes problematic to record it in writing, and even in reading, error databases. Some numbers cannot be contained on several pages, so mathematicians have come up with notations to capture large numbers.

It is worth considering that they are all different, each has its own principle of fixation. Among these it is worth mentioning Steinhaus and Knuth notations.

However, the largest number, the “Graham number,” was used Ronald Graham in 1977 when performing mathematical calculations, and this is the number G64.

Many people are interested in questions about what large numbers are called and what number is the largest in the world. We will deal with these interesting questions in this article.

Story

The southern and eastern Slavic peoples used alphabetical numbering to record numbers, and only those letters that are in the Greek alphabet. A special “title” icon was placed above the letter that designated the number. The numerical values ​​of the letters increased in the same order as the letters in the Greek alphabet (in the Slavic alphabet the order of the letters was slightly different). In Russia, Slavic numbering was preserved until the end of the 17th century, and under Peter I they switched to “Arabic numbering,” which we still use today.

The names of the numbers also changed. Thus, until the 15th century, the number “twenty” was designated as “two tens” (two tens), and then it was shortened for faster pronunciation. The number 40 was called “fourty” until the 15th century, then it was replaced by the word “forty,” which originally meant a bag containing 40 squirrel or sable skins. The name “million” appeared in Italy in 1500. It was formed by adding an augmentative suffix to the number “mille” (thousand). Later this name came to the Russian language.

In the ancient (18th century) “Arithmetic” of Magnitsky, a table of the names of numbers is given, brought to the “quadrillion” (10^24, according to the system through 6 digits). Perelman Ya.I. the book “Entertaining Arithmetic” gives the names of large numbers of that time, slightly different from today: septillion (10^42), octalion (10^48), nonalion (10^54), decalion (10^60), endecalion (10^ 66), dodecalion (10^72) and it is written that “there are no further names.”

Ways to construct names for large numbers

There are 2 main ways to name large numbers:

  • American system, which is used in the USA, Russia, France, Canada, Italy, Turkey, Greece, Brazil. The names of large numbers are constructed quite simply: the Latin ordinal number comes first, and the suffix “-million” is added to it at the end. An exception is the number “million,” which is the name of the number thousand (mille) and the augmentative suffix “-million.” The number of zeros in a number, which is written according to the American system, can be found out by the formula: 3x+3, where x is the Latin ordinal number
  • English system most common in the world, it is used in Germany, Spain, Hungary, Poland, Czech Republic, Denmark, Sweden, Finland, Portugal. The names of numbers according to this system are constructed as follows: the suffix “-million” is added to the Latin numeral, the next number (1000 times larger) is the same Latin numeral, but the suffix “-billion” is added. The number of zeros in a number, which is written according to the English system and ends with the suffix “-million,” can be found out by the formula: 6x+3, where x is the Latin ordinal number. The number of zeros in numbers ending with the suffix “-billion” can be found using the formula: 6x+6, where x is the Latin ordinal number.

Only the word billion passed from the English system into the Russian language, which is still more correctly called as the Americans call it - billion (since the Russian language uses the American system for naming numbers).

In addition to numbers that are written according to the American or English system using Latin prefixes, non-system numbers are known that have their own names without Latin prefixes.

Proper names for large numbers

Number Latin numeral Name Practical significance
10 1 10 ten Number of fingers on 2 hands
10 2 100 one hundred About half the number of all states on Earth
10 3 1000 thousand Approximate number of days in 3 years
10 6 1000 000 unus (I) million 5 times more than the number of drops per 10 liter. bucket of water
10 9 1000 000 000 duo (II) billion (billion) Estimated Population of India
10 12 1000 000 000 000 tres (III) trillion
10 15 1000 000 000 000 000 quattor (IV) quadrillion 1/30 of the length of a parsec in meters
10 18 quinque (V) quintillion 1/18th of the grains from the legendary award to the inventor of chess
10 21 sex (VI) sextillion 1/6 of the mass of planet Earth in tons
10 24 septem (VII) septillion Number of molecules in 37.2 liters of air
10 27 octo (VIII) octillion Half of Jupiter's mass in kilograms
10 30 novem (IX) quintillion 1/5 of all microorganisms on the planet
10 33 decem (X) decillion Half the mass of the Sun in grams
  • Vigintillion (from Latin viginti - twenty) - 10 63
  • Centillion (from Latin centum - one hundred) - 10,303
  • Million (from Latin mille - thousand) - 10 3003

For numbers greater than a thousand, the Romans did not have their own names (all names for numbers were then composite).

Compound names of large numbers

In addition to proper names, for numbers greater than 10 33 you can get compound names by combining prefixes.

Compound names of large numbers

Number Latin numeral Name Practical significance
10 36 undecim (XI) andecillion
10 39 duodecim (XII) duodecillion
10 42 tredecim (XIII) thredecillion 1/100 of the number of air molecules on Earth
10 45 quattuordecim (XIV) quattordecillion
10 48 quindecim (XV) quindecillion
10 51 sedecim (XVI) sexdecillion
10 54 septendecim (XVII) septemdecillion
10 57 octodecillion So many elementary particles on the Sun
10 60 novemdecillion
10 63 viginti (XX) vigintillion
10 66 unus et viginti (XXI) anvigintillion
10 69 duo et viginti (XXII) duovigintillion
10 72 tres et viginti (XXIII) trevigintillion
10 75 quattorvigintillion
10 78 quinvigintillion
10 81 sexvigintillion So many elementary particles in the universe
10 84 septemvigintillion
10 87 octovigintillion
10 90 novemvigintillion
10 93 triginta (XXX) trigintillion
10 96 antigintillion
  • 10 123 - quadragintillion
  • 10 153 — quinquagintillion
  • 10 183 — sexagintillion
  • 10,213 - septuagintillion
  • 10,243 — octogintillion
  • 10,273 — nonagintillion
  • 10 303 - centillion

Further names can be obtained by direct or reverse order of Latin numerals (which is correct is not known):

  • 10 306 - ancentillion or centunillion
  • 10 309 - duocentillion or centullion
  • 10 312 - trcentillion or centtrillion
  • 10 315 - quattorcentillion or centquadrillion
  • 10 402 - tretrigyntacentillion or centretrigintillion

The second spelling is more consistent with the construction of numerals in the Latin language and avoids ambiguities (for example, in the number trecentillion, which according to the first spelling is both 10,903 and 10,312).

  • 10 603 - decentillion
  • 10,903 - trcentillion
  • 10 1203 - quadringentillion
  • 10 1503 — quingentillion
  • 10 1803 - sescentillion
  • 10 2103 - septingentillion
  • 10 2403 — octientillion
  • 10 2703 — nongentillion
  • 10 3003 - million
  • 10 6003 - duo-million
  • 10 9003 - three million
  • 10 15003 — quinquemilliallion
  • 10 308760 -ion
  • 10 3000003 — mimiliaillion
  • 10 6000003 — duomimiliaillion

Myriad– 10,000. The name is outdated and practically not used. However, the word “myriads” is widely used, which does not mean a specific number, but an innumerable, uncountable number of something.

Googol ( English . googol) — 10 100. The American mathematician Edward Kasner first wrote about this number in 1938 in the journal Scripta Mathematica in the article “New Names in Mathematics.” According to him, his 9-year-old nephew Milton Sirotta suggested calling the number this way. This number became publicly known thanks to the Google search engine named after it.

Asankheya(from Chinese asentsi - uncountable) - 10 1 4 0 . This number is found in the famous Buddhist treatise Jaina Sutra (100 BC). It is believed that this number is equal to the number of cosmic cycles required to achieve nirvana.

Googolplex ( English . Googolplex) — 10^10^100. This number was also invented by Edward Kasner and his nephew; it means one followed by a googol of zeros.

Skewes number (Skewes' number, Sk 1) means e to the power of e to the power of e to the power of 79, that is, e^e^e^79. This number was proposed by Skewes in 1933 (Skewes. J. London Math. Soc. 8, 277-283, 1933.) when proving the Riemann hypothesis concerning prime numbers. Later, Riele (te Riele, H. J. J. “On the Sign of the Difference П(x)-Li(x).” Math. Comput. 48, 323-328, 1987) reduced the Skuse number to e^e^27/4, which is approximately equal to 8.185·10^370. However, this number is not an integer, so it is not included in the table of large numbers.

Second Skewes number (Sk2) equals 10^10^10^10^3, that is, 10^10^10^1000. This number was introduced by J. Skuse in the same article to indicate the number up to which the Riemann hypothesis is valid.

For super-large numbers it is inconvenient to use powers, so there are several ways to write numbers - Knuth, Conway, Steinhouse notations, etc.

Hugo Steinhouse proposed writing large numbers inside geometric shapes (triangle, square and circle).

Mathematician Leo Moser refined Steinhouse's notation, proposing to draw pentagons, then hexagons, etc. after the squares. Moser also proposed a formal notation for these polygons so that the numbers could be written without drawing complex pictures.

Steinhouse came up with two new super-large numbers: Mega and Megiston. In Moser notation they are written as follows: Mega – 2, Megiston– 10. Leo Moser also proposed to call a polygon with the number of sides equal to mega – megagon, and also proposed the number “2 in Megagon” - 2. The last number is known as Moser's number or just like Moser.

There are numbers larger than Moser. The largest number that has been used in a mathematical proof is number Graham(Graham's number). It was first used in 1977 to prove an estimate in Ramsey theory. This number is associated with bichromatic hypercubes and cannot be expressed without a special 64-level system of special mathematical symbols introduced by Knuth in 1976. Donald Knuth (who wrote “The Art of Programming” and created the TeX editor) came up with the concept of superpower, which he proposed to write with arrows pointing up:

In general

Graham proposed G-numbers:

The number G 63 is called Graham's number, often denoted simply G. This number is the largest known number in the world and is listed in the Guinness Book of Records.



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