# List of numbers

List of numbers

Rational numbers

Notable rational numbers

Natural numbers

* There is no consistent and widely accepted way to extend cardinals beyond centillion (centilliard).

Proposed systematic names for powers of 10

Gillion system

As proposed by Russ Rowlett, based on Greek-derived numerical prefixes: |

SI-derived

Transcendental numbers

* Khinchin-Lévy constant: 1.186 569 110 4... [http://mathworld.wolfram.com/Khinchin-LevyConstant.html]
* Euler's number: e = 2.718 281 828 459 045 235 360 287 471 353 ...
* Pi: π = 3.141 592 653 589 793 238 462 643 383 279 ...

uspected transcendentals

* Euler-Mascheroni constant: γ = 0.577 215 664 901 532 860 606 512 090 082 ...
* Gauss-Kuzmin-Wirsing constant: 0.303 663 002 9... [http://mathworld.wolfram.com/Gauss-Kuzmin-WirsingConstant.html]
* Laplace limit: ε=0.662 743 419 3... [http://mathworld.wolfram.com/LaplaceLimit.html]
* Khinchin's constant: 2.685 452 001... [http://mathworld.wolfram.com/KhinchinsConstant.html]
* Feigenbaum constants: δ = 4.6692 ... and α = 2.5029 ...

Numbers not known with high precision

Grothendieck constant: between 1.67 and 1.79

Hypercomplex numbers

Algebraic complex numbers

* Imaginary unit: $i = sqrt\left\{-1\right\}$

Other hypercomplex numbers

* The quaternions
* The octonions
* The sedenions
* The dual numbers (with an infinitesimal)

Transfinite numbers

* Infinity in general: $infty$
* Aleph-null: $aleph_0$
* Aleph-one: $aleph_1$
* Beth-one: () is the cardinality of the continuum: $2^\left\{aleph_0\right\}$

Numbers representing measured quantities

* Pair: 2 (the base of the binary numeral system)
* Dozen: 12 (the base of the duodecimal numeral system)
* Baker's dozen: 13
* Score: 20 (the base of the vigesimal numeral system)
* Gross: 144 (= 122)
* Great gross: 1728 (= 123)
* Avogadro's number: NA = $6.022... imes 10^\left\{23\right\}$

Numbers without specific values

Bases

* Base -3 (negaternary)
* Base -2 (negabinary)
* Base 1 (unary)
* Base 2 (binary)
* Base 4 (quaternary)
* Base 5 (quinary)
* Base 6 (senary or heximal)
* Base 7 (septenary)
* Base 8 (octal)
* Base 9 (nonary)
* Base 10 (decimal)
* Base 12 (duodecimal or dozenal)
* Base 13 (tridecimal or tredecimal)
* Base 20 (vigesimal)
* Base 26 (hexavigesimal)
* Base 27 (septemvigesimal)
* Base 30 (trigesimal)
* Base 32 (duotrigesimal)
* Base 36 (hexatridecimal, sexatrigesimal or hexatrigesimal)
* Base 60 (sexagesimal)
* Base φ (phinary)
* Base 2i (quater-imaginary)See also "positional systems" of numeral system for bases which might not be listed here.

ee also

* English-language numerals
* Numbers in various languages
* Floating point
* Fraction (mathematics)
* Large number
* List of prime numbers
* Mathematical constant
* Names of large numbers
* Negative number
* Number names
* Orders of magnitude (numbers)
* Ordinal number
* SI prefix
* Small number
* Surreal number
* Table of prime factors

* "Kingdom of Infinite Number: A Field Guide" by Bryan Bunch, W.H. Freeman & Company, 2001. ISBN 0-7167-4447-3

* [http://www.mathcats.com/explore/reallybignumbers.html See how to write big numbers]
* [http://www.kokogiak.com/megapenny/ The MegaPenny Project - Visualizing big numbers]
* [http://home.earthlink.net/~mrob/pub/math/largenum.html Robert P. Munafo's Large Numbers page]
* [http://www-users.cs.york.ac.uk/~susan/cyc/b/big.htm Different notations for big numbers - by Susan Stepney]
* [http://www.unc.edu/~rowlett/units/large.html Names for Large Numbers] , in "How Many? A Dictionary of Units of Measurement" by Russ Rowlett

Wikimedia Foundation. 2010.

### Look at other dictionaries:

• List of numbers in various languages — The following tables list the names and symbols for the numbers 0 through 10 in various languages and scripts of the world. Where possible, each language s native writing system is used, along with transliterations in Latin script and other… …   Wikipedia

• List of mathematics articles (L) — NOTOC L L (complexity) L BFGS L² cohomology L function L game L notation L system L theory L Analyse des Infiniment Petits pour l Intelligence des Lignes Courbes L Hôpital s rule L(R) La Géométrie Labeled graph Labelled enumeration theorem Lack… …   Wikipedia

• List of prime numbers — This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries. By Euclid s theorem, there are an infinite number of prime numbers. Subsets of the… …   Wikipedia

• List of mathematical examples — This page will attempt to list examples in mathematics. To qualify for inclusion, an article should be about a mathematical object with a fair amount of concreteness. Usually a definition of an abstract concept, a theorem, or a proof would not be …   Wikipedia

• List of Rubicon episodes — Rubicon is an American television drama series created by Jason Horwitch. The series centers on an intelligence analyst at a national think tank in New York City called the American Policy Institute (API) who discovers that he may be working with …   Wikipedia

• List of Los Angeles class submarines — This is a complete list of Los Angeles class submarines by hull number. Summary by Status Complete List *Hull numbers 726–743 were assigned to the Ohio class submarines. Hull numbers 744–749 were not assigned. **Last of the class. Hull number 774 …   Wikipedia

• List of mathematics reference tables — See also: List of reference tables Mathematics *List of mathematical topics *List of statistical topics *List of mathematical functions *List of mathematical theorems *List of mathematical proofs *List of matrices *List of numbers *List of… …   Wikipedia

• List of LGBT organizations in Singapore — Historical= Real world*Yagga Yagga support group the third, but most well known, of the initial support groups for gay men ever to be organised in Singapore. It had two sessions, Yagga Yagga 1 and Yagga Yagga 2, separated by several months. The… …   Wikipedia

• Numbers (software) — Numbers Numbers 2.0, part of iWork 09 Developer(s) Apple …   Wikipedia

• NUMBERS, BOOK OF — (Heb. בְּמִדְבַּר; in the wilderness ), the fourth book of the Pentateuch. Like the other books of the Pentateuch, its name in Hebrew is taken from the first significant word in the book (the fifth word in chapter 1), which also reflects its… …   Encyclopedia of Judaism