1 (one, unit, unity) is a number, numeral, and glyph. It is the first and smallest positive integer of the infinite sequence of natural numbers.

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In mathematics, 0.999... is a repeating decimal that is equal to 1. Many proofs have been made to show this is correct. [2][3] One is important for computer science, because the binary numeral …

The glyph used today in the Western world to represent the number 1, a vertical line, often with a serif at the top and sometimes a short horizontal line at the bottom, traces its roots back to the …

Jul 18, 2025 · 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 …

Your guide to the number 1, an odd number which is uniquely neither prime nor composite. Mathematical info, prime factorization, fun facts and numerical data for STEM, education and fun.

1 is the Hindu-Arabic numeral for the number one (the unit). It is the smallest positive integer, and smallest natural number. 1 is the multiplicative identity, i.e. any number multiplied by 1 equals …

1 is a greatest hits album of the British rock band the Beatles, originally released on 13 November 2000. The album features virtually every number-one single the band achieved in the United...

Число 1 — наименьшее натуральное число, большее нуля (является ли нуль натуральным числом — зависит от принятых соглашений).