1000 (number)

"1,000"; "Thousand"; and "Chiliad" redirect here. For other uses, see 1000 (disambiguation) and Chiliarchy.

← 999 1000 1001 →
List of numbers Integers ← 0 1k 2k 3k 4k 5k 6k 7k 8k 9k →
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
Greek numeral	,Α´
Roman numeral	M, m
Roman numeral (unicode)	M, m, ↀ
Unicode symbol	ↀ
Greek prefix	chilia
Latin prefix	milli
Binary	11111010002
Ternary	11010013
Senary	43446
Octal	17508
Duodecimal	6B412
Hexadecimal	3E816
Tamil	௲
Chinese	千
Punjabi	੧੦੦੦
Devanagari	१०००
Armenian	Ռ
Egyptian hieroglyph	𓆼

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.

A group of one thousand units 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. It is the first 4-digit integer.