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1

From Wikipedia, the free encyclopedia

This article is about the number. For the year, see AD 1. For other uses, see One (disambiguation) and Number One (disambiguation).
← 0 1 2 →
-1 0 1 2 3 4 5 6 7 8 9 →
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Cardinalone
Ordinal1st
(first)
Numeral systemunary
Factorization∅
Divisors1
Greek numeralΑ´
Roman numeralI, i
Greek prefixmono-/haplo-
Latin prefixuni-
Binary12
Ternary13
Octal18
Duodecimal112
Hexadecimal116
Greek numeralα'
Arabic, Kurdish, Persian, Sindhi, Urdu١
Assamese & Bengali১
Chinese numeral一/弌/壹
Devanāgarī१
Ge'ez፩
GeorgianႠ/ⴀ/ა(Ani)
Hebrewא
Japanese numeral一/壱
Kannada೧
Khmer១
Malayalam൧
Thai๑
Tamil௧
Telugu೧
Counting rod
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