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1999 (number)

← 999 1000 1001 →
Cardinal one thousand
Ordinal 1000th
(one thousandth)
Factorization 23× 53
Divisors 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000
Roman numeral M
Greek prefix
Latin prefix
Binary 11111010002
Ternary 11010013
Quaternary 332204
Quinary 130005
Senary 43446
Octal 17508
Duodecimal 6B412
Hexadecimal 3E816
Vigesimal 2A020
Base 36 RS36
Tamil

1000 or one thousand is the natural number following 999 and preceding 1001. In most English-speaking countries, it is often written with a comma separating the thousands unit: 1,000.

It may also be described as the short thousand in historical discussion of medieval contexts where it might be confused with the Germanic concept of the "long thousand" (1200).


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