1000 (number)

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999 1000 1001
Cardinal one thousand
Ordinal 1000th
(one thousandth)
Factorization 23· 53
Roman numeral M
Binary 11111010002
Ternary 11010013
Quaternary 332204
Quinary 130005
Senary 43446
Octal 17508
Duodecimal 6B412
Hexadecimal 3E816
Vigesimal 2A020
Base 36 RS36

A thousand (1000, one thousand or 1,000) is the natural number after 999 and before 1001. One thousand thousands is known as a million.

In Roman numerals, 1000 is written as M.

Examples of a thousand[change | change source]