1 - Wikiwand

Glyph origin

Tenth century “West Arabic” variation of the Nepali form of Hindu-Arabic numerals (compare Devanagari script १ (1, “éka”)), possibly influenced by Roman numeral Ⅰ, both ultimately from using a single stroke to represent the number one. See 1 § As a digit on WikipediaWikipedia for more.

Symbol

1 (previous 0, next 2)

The cardinal number one, a single thing or unit.
A digit in decimal and every other base numbering system, including binary, octal, and hexadecimal.
15 × 134 = 2010

0010 0011₂ (the number 35 in binary notation)

0x1000E001 (the number 268492801 in hexadecimal notation)
(mathematics) The identity element with respect to multiplication in a ring.
a×1 = a
(computer science) Bit state corresponding to binary digit 1, or on or true.
(mathematics) A Boolean or truth value corresponding to true.
f : B^k → B : B = {0, 1}
(mathematics) The one-point topological space, trivial ring, trivial group, a category with a single object or a (canonical) singleton.
January.
Comeronyms: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
(phonetics, often superscript) the pitch of a tone, either high or low depending on local convention; '1' is most commonly the highest or lowest pitch (but see 0)
Synonyms: ˥, ˩
(phonetics, Sinosphere, often superscript) tone number 1, typically identified with dark level yin ping (陰平). May simply be level ping tone (平) if the yin–yang distinction is not made.
Synonym: ꜀
(linguistics, superscript) accent 1 in Norwegian, Swedish and Limburgish.
Norwegian/Swedish toneme 1 is sometimes transcribed with a simple primary stress mark, that is ˈ.
(linguistics) First person.
Coordinate terms: 2, 3

Gallery

Letter styles
Lining digit 1.
Oldstyle 1 in Fraktur script.

Alternative forms

The following forms are equivalent as a decimal digit:

Aegean numerals: 𐄇
Arabic (Eastern) numerals: ١
Arabic (Western) numerals: 1
Assamese numerals: ১
Balinese numerals: ᭑
Bengali numerals: ১
Brahmi numerals: 𑁧
Chakma numerals: 𑄷
Cham numerals: ꩑
Devanagari numerals: १
Dhives Akuru numerals: 𑥑
Garay numerals: 𐵁
Gujarati numerals: ૧
Gurmukhi numerals: ੧
Indic Siyaq numerals: 𞱱
Hanifi Rohingya numerals: 𐴱
Javanese numerals: ꧑
Kaktovik numerals: 𝋁
Kannada numerals: ೧
Kawi numerals: 𑽑
Kayah Li numerals: ꤁
Khmer numerals: ១
Khudawadi numerals: 𑋱
Lanna numerals: (secular) ᪁, (religious) ᪑
Lao numerals: ໑
Lepcha numerals: ᱁
Limbu numerals: ᥇
Malayalam numerals: ൧
Maya numerals: 𝋡
Mende Kikakui numerals: 𞣇
Meroitic cursive numerals: 𐧀
Meitei numerals: ꯱
Mongolian numerals: ᠑
Myanmar numerals: ၁
N'Ko numerals: ߁
Ol Chiki numerals: ᱑
Odia numerals: ୧
Osmanya numerals: 𐒡
Ottoman Siyaq numerals: 𞴁
Pahawh Hmong numerals: 𖭑
Persian numerals: ۱
Saurashtra numerals: ꣑
Sharada numerals: 𑇑
Sinhalese numerals: ෧
Sundanese numerals: ᮱
Takri numerals: 𑛁
Tamil numerals: ௧
Telugu numerals: ౧
Thai numerals: ๑
Tibetan numerals: ༡
Tirhuta numerals: 𑓑
Warang Citi numerals: 𑣡

The following additional forms are equivalent as a cardinal number:

Derived terms

(select cardinal numbers containing ‘1’) 10, 11, 12, ..., 100, 101, 102, ..., 1000, ..., 10,000, 100,000, 1,000,000, ...
(other select numbers containing ‘1’) -10, -1, -0.1, ..., 0.1, 0.01, 0.001, ...
+1

Letter

(nonstandard) Alternative form of Ӏ/ӏ (Cyrillic letter palochka)