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This is a list of articles about numbers (not about numerals). Natural numbers Powers of ten See: Orders of magnitude (numbers) Notable integers Other numbers that are notable for their mathematical properties or cultural meanings include: Named integers Prime numbers A prime number is a positive integer greater than one whose only positive divisors are one and itself. The first 100 prime numbers:
Perfect numbers A perfect number is an integer which is the sum of its positive proper divisors (all divisors except itself). The first ten perfect numbers:
Cardinal numbers In the following tables, and indicates that the word and is used in some dialects (such as British English), and omitted in other dialects (such as American English). Small numbers This table demonstrates the standard English construction of small cardinal numbers up to ten million -- names for which all variants of English agree. English names for powers of 10 This table compares the English names of cardinal numbers according to various American, British, and Continental European conventions. See names of numbers in English or English-language numerals for more information on naming numbers. Gillion system As proposed by Russ Rowlett, based on Greek-derived numerical prefixes: Myriad system Proposed by Donald E. Knuth: Googol and others Fraction (mathematics)|Fractional numbers This is a table of English names for positive rational numbers less than 1. It also lists alternative names, but there is no widespread convention for the names of extremely small positive numbers. Keep in mind that rational numbers like 0.12 can be represented in infinitely many ways, e.g. zero-point-one-two (0.12), twelve percent (12%), three twenty-fifths , nine seventy-fifths , six fiftieths , twelve hundredths , twenty-four two-hundredths , etc. Algebraic numbers Transcendental numbers Suspected transcendentals: Algebraic complex numbers Other hypercomplex numbers Transfinite numbers Numbers representing measured quantities Numbers without specific values See placeholder names Bases See also Further reading | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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