1000 (number)

1000 or one thousand is the natural number following 999 and preceding 1001. In most English-speaking countries, it can be written with or without a comma or sometimes a period separating the thousands digit: 1,000.

"1,000", "Thousand", and "Chiliad" redirect here. For other uses, see 1000 (disambiguation) or, for the military unit, see Chiliarchy.

← 999 1000 1001 →
Cardinalone thousand
Ordinal1000th
(one thousandth)
Factorization23 × 53
Divisors1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000
Greek numeral,Α´
Roman numeralM
Roman numeral (unicode)M, m, ↀ
Unicode symbol(s)ↀ
Greek prefixchilia
Latin prefixmilli
Binary11111010002
Ternary11010013
Senary43446
Octal17508
Duodecimal6B412
Hexadecimal3E816
Tamil௲
Chinese千
Punjabi੧੦੦੦
Devanagari१०००
Look up thousand or 1000 in Wiktionary, the free dictionary.

A group of one thousand things is sometimes known, from Ancient Greek, as a chiliad. A period of one thousand years may be known as a chiliad or, more often from Latin, as a millennium. The number 1000 is also sometimes described as a short thousand in medieval contexts where it is necessary to distinguish the Germanic concept of 1200 as a long thousand.

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