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33-498: 100 is the square of 10 (in scientific notation it is written as 10). The standard SI prefix for a hundred is " hecto -". 100 is the basis of percentages ( per centum meaning "by the hundred" in Latin), with 100% being a full amount. 100 is a Harshad number in decimal , and also in base-four, a base in-which it is also a self-descriptive number . 100 is the sum of the first nine prime numbers , from 2 through 23 . It

66-564: A Mersenne prime is 11. 11 is part of a pair of Brown numbers . Only three such pairs of numbers are known. Rows in Pascal's triangle can be seen as representation of powers of 11. An 11-sided polygon is called a hendecagon , or undecagon . A regular hendecagon is the polygon with the fewest number of sides that is not able to be constructed with a straightedge, compass, and angle trisector . The Mathieu group M 11 {\displaystyle \mathrm {M} _{11}}

99-402: A bassoon , not counting the whisper key. (A few bassoons have a 12th thumb key.) In sports, there are 11 players on an association football (soccer) team, 11 players on an American football team during play, 11 players on a cricket team on the field, and 11 players in a field hockey team. In the game of blackjack , an ace can count as either one or 11, whichever is more advantageous for

132-425: A point stabilizer of degree 11 inside the smallest sporadic simple group M 11 {\displaystyle \mathrm {M} _{11}} , a group with an irreducible faithful complex representation in ten dimensions, and an order equal to   7920 = 11 ⋅ 10 ⋅ 9 ⋅ 8 {\displaystyle 7920=11\cdot 10\cdot 9\cdot 8}   that

165-400: A semiperfect number . The geometric mean of its nine divisors is 10 . 100 is the sum of the cubes of the first four positive integers (100 = 1 + 2 + 3 + 4). This is related by Nicomachus's theorem to the fact that 100 also equals the square of the sum of the first four positive integers: 100 = 10 = (1 + 2 + 3 + 4) . 100 = 2 + 6, thus 100 is the seventh Leyland number . 100 is also

198-571: A negative Cartan matrix determinant , of −1. There are precisely ten affine Coxeter groups that admit a formal description of reflections across n {\displaystyle n} dimensions in Euclidean space. These contain infinite facets whose quotient group of their normal abelian subgroups is finite. They include the one-dimensional Coxeter group I ~ 1 {\displaystyle {\tilde {I}}_{1}} [ ∞ ], which represents

231-535: Is "deca-". The meaning "10" is part of the following terms: Also, the number 10 plays a role in the following: The metric system is based on the number 10, so converting units is done by adding or removing zeros (e.g. 1 centimetre = 10 millimetres, 1 decimetre = 10 centimetres, 1 meter = 100 centimetres, 1 dekametre = 10 meters, 1 kilometre = 1,000 meters). The Ten Commandments in the Hebrew Bible are ethical commandments decreed by God (to Moses ) for

264-521: Is 23456789, which contains eight consecutive integers as digits. One hundred is the atomic number of fermium , an actinide , and the last of the heavy metals that can be created through neutron bombardment. On the Celsius scale, 100 degrees is the boiling temperature of pure water at sea level . The Kármán line lies at an altitude of 100 kilometres (62 mi) above the Earth's sea level and

297-407: Is also divisible by the number of primes below it, 25 . 100 cannot be expressed as the difference between any integer and the total of coprimes below it, making it a noncototient . 100 has a reduced totient of 20, and an Euler totient of 40. A totient value of 100 is obtained from four numbers: 101 , 125 , 202 , and 250 . 100 can be expressed as a sum of some of its divisors, making it

330-493: Is commonly used to define the boundary between Earth's atmosphere and outer space. Most of the world's currencies are divided into 100 subunits; for example, one euro is one hundred cents and one pound sterling is one hundred pence. By specification, 100 euro notes feature a picture of a Rococo gateway on the obverse and a Baroque bridge on the reverse. The U.S. hundred-dollar bill has Benjamin Franklin 's portrait;

363-478: Is decomposed into kites and rhombi that are proportioned in golden ratio . The regular decagon is also the Petrie polygon of the regular dodecahedron and icosahedron , and it is the largest face that an Archimedean solid can contain, as with the truncated dodecahedron and icosidodecahedron . There are ten regular star polychora in the fourth dimension , all of which have orthographic projections in

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396-399: Is one more than the one-thousandth prime number, 7919. E 10 {\displaystyle \mathrm {E} _{10}} is an infinite-dimensional Kac–Moody algebra which has the even Lorentzian unimodular lattice II 9,1 of dimension 10 as its root lattice. It is the first E n {\displaystyle \mathrm {E} _{n}} Lie algebra with

429-527: Is the maximal subgroup Mathieu group M 12 {\displaystyle \mathrm {M} _{12}} , where 11 is also its largest prime factor. In chemistry, Group 11 of the Periodic Table of the Elements ( IUPAC numbering) consists of the three coinage metals copper , silver , and gold known from antiquity, and roentgenium , a recently synthesized superheavy element. 11

462-558: Is the fifth composite number , and the smallest noncototient , which is a number that cannot be expressed as the difference between any integer and the total number of coprimes below it. Ten is the eighth Perrin number , preceded by 5 , 5, and 7 . As important sums, The factorial of ten is equal to the product of the factorials of the first four odd numbers as well: 10 ! = 1 ! ⋅ 3 ! ⋅ 5 ! ⋅ 7 ! {\displaystyle 10!=1!\cdot 3!\cdot 5!\cdot 7!} , and 10

495-401: Is the fourth telephone number , and the number of Young tableaux with four cells. It is also the number of n {\displaystyle n} - queens problem solutions for n = 5 {\displaystyle n=5} . There are precisely ten small Pisot numbers that do not exceed the golden ratio . As a constructible polygon with a compass and straight-edge,

528-556: Is the highest rank for paracompact hyperbolic solutions , with a representation in nine dimensions. There also exist hyperbolic Lorentzian cocompact groups where removing any permutation of two nodes in its Coxeter–Dynkin diagram leaves a finite or Euclidean graph. The tenth dimension is the highest dimensional representation for such solutions, which share a root symmetry in eleven dimensions. These are of particular interest in M-theory of string theory . The SI prefix for 10

561-505: Is the number of spacetime dimensions in M-theory . Apollo 11 was the first crewed spacecraft to land on the Moon . In our solar system, the Sun has a sunspot cycle 's periodicity that is approximately 11 years. The interval of an octave plus a fourth is an 11th. A complete 11th chord has almost every note of a diatonic scale . Regarding musical instruments , there are 11 thumb keys on

594-476: Is the only number whose sum and difference of its prime divisors yield prime numbers ( 2 + 5 = 7 {\displaystyle (2+5=7} and 5 − 2 = 3 ) {\displaystyle 5-2=3)} . Ten has an aliquot sum of 8 , and is the first discrete semiprime ( 2 × 5 ) {\displaystyle (2\times 5)} to be in deficit , as with all subsequent discrete semiprimes. It

627-405: Is the second composite in the aliquot sequence for ten (10, 8, 7 , 1 , 0 ) that is rooted in the prime 7 - aliquot tree . It is a largely composite number , as it has 4 divisors and no smaller number has more than 4 divisors. According to conjecture, ten is the average sum of the proper divisors of the natural numbers N {\displaystyle \mathbb {N} } if

660-439: Is the smallest of twenty-six sporadic groups . It has order 7920 = 2 4 ⋅ 3 2 ⋅ 5 ⋅ 11 = 8 ⋅ 9 ⋅ 10 ⋅ 11 {\displaystyle 7920=2^{4}\cdot 3^{2}\cdot 5\cdot 11=8\cdot 9\cdot 10\cdot 11} , with 11 as its largest prime factor. M 11 {\displaystyle \mathrm {M} _{11}}

693-405: The H 3 {\displaystyle \mathrm {H} _{3}} Coxeter plane that contain various decagrammic symmetries, which include compound forms of the regular decagram. M 10 {\displaystyle \mathrm {M} _{10}} is a multiply transitive permutation group on ten points. It is an almost simple group, of order , It functions as

SECTION 20

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726-595: The apeirogonal tiling , as well as the five affine Coxeter groups G ~ 2 {\displaystyle {\tilde {G}}_{2}} , F ~ 4 {\displaystyle {\tilde {F}}_{4}} , E ~ 6 {\displaystyle {\tilde {E}}_{6}} , E ~ 7 {\displaystyle {\tilde {E}}_{7}} , and E ~ 8 {\displaystyle {\tilde {E}}_{8}} that are associated with

759-690: The eleventh hour means the last possible moment to take care of something, and often implies a situation of urgent danger or emergency (see Doomsday clock ). "The eleventh hour" is a phrase in the Parable of the Workers in the Vineyard in the Bible. While 11 has its own name in Germanic languages such as English, German, or Swedish, and some Latin-based languages such as Spanish, Portuguese, and French, it

792-452: The "Benjamin" is the largest U.S. bill in print. American savings bonds of $ 100 have Thomas Jefferson 's portrait, while American $ 100 treasury bonds have Andrew Jackson 's portrait. One hundred is also: 10 (number) 10 ( ten ) is the even natural number following 9 and preceding 11 . Ten is the base of the decimal numeral system , the most common system of denoting numbers in both spoken and written language. Ten

825-470: The first regular polygon unable to do so is the eleven-sided hendecagon . While the regular decagon cannot tile alongside other regular figures, ten of the eleven regular and semiregular tilings of the plane are Wythoffian (the elongated triangular tiling is the only exception); however, the plane can be covered using overlapping decagons, and is equivalent to the Penrose P2 tiling when it

858-693: The five exceptional Lie algebras . They also include the four general affine Coxeter groups A ~ n {\displaystyle {\tilde {A}}_{n}} , B ~ n {\displaystyle {\tilde {B}}_{n}} , C ~ n {\displaystyle {\tilde {C}}_{n}} , and D ~ n {\displaystyle {\tilde {D}}_{n}} that are associated with simplex , cubic and demihypercubic honeycombs, or tessellations . Regarding Coxeter groups in hyperbolic space , there are infinitely many such groups; however, ten

891-718: The people of Israel to follow. 11 (number) 11 ( eleven ) is the natural number following 10 and preceding 12 . In English, it is the smallest positive integer whose name has three syllables. "Eleven" derives from the Old English ęndleofon , which is first attested in Bede 's late 9th-century Ecclesiastical History of the English People . It has cognates in every Germanic language (for example, German elf ), whose Proto-Germanic ancestor has been reconstructed as * ainalifa- , from

924-575: The player. In the mockumentary film This Is Spinal Tap , the idiomatic phrase up to eleven is coined to allude to going beyond the limitations of a system, in this case music amplifier volume levels. The stylized maple leaf on the Flag of Canada has 11 points. The CA$ one-dollar loonie is in the shape of an 11-sided hendecagon , and clocks depicted on Canadian currency , like the Canadian 50-dollar bill , show 11:00. Being one hour before 12:00,

957-535: The prefix * aina- (adjectival " one ") and suffix * -lifa- , of uncertain meaning. It is sometimes compared with the Lithuanian vienúolika , though -lika is used as the suffix for all numbers from 11 to 19 (analogously to "-teen"). The Old English form has closer cognates in Old Frisian , Saxon , and Norse , whose ancestor has been reconstructed as * ainlifun . This

990-422: The regular decagon has an internal angle of 12 2 = 144 {\displaystyle 12^{2}=144} degrees and a central angle of 6 2 = 36 {\displaystyle 6^{2}=36} degrees. All regular n {\displaystyle n} -sided polygons with up to ten sides are able to tile a plane-vertex alongside other regular polygons alone;

1023-473: The seventeenth Erdős–Woods number , and the fourth 18- gonal number . The 100th prime number is 541 , which returns 0 {\displaystyle 0} for the Mertens function . It is the 10th star number (whose digit sum also adds to 10 in decimal ). There are exactly 100 prime numbers in base-ten whose digits are in strictly ascending order (e.g. 239, 2357, etc.). The last such prime number

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1056-471: The size of the numbers approaches infinity, and it is the smallest number whose status as a possible friendly number is unknown. Figurate numbers that represent regular ten-sided polygons are called decagonal and centered decagonal numbers. On the other hand, 10 is the first non-trivial centered triangular number and tetrahedral number . 10 is also the first member in the coordination sequence for body-centered tetragonal lattices . 10

1089-408: Was formerly thought to be derived from Proto-Germanic * tehun (" ten "); it is now sometimes connected with * leikʷ- or * leip- ("left; remaining"), with the implicit meaning that "one is left" after counting to ten. 11 is a prime number , and a super-prime . 11 forms a twin prime with 13 , and sexy pair with 5 and 17. The first prime exponent that does not yield

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