1 Inch Nylon Webbing Hobby Lobby, any number multiplied by 1 equals itself, for example: a ⋅ 1 = a {\displaystyle a 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 Indians, who wrote 1 as a horizontal line, as is still the case in Chinese script. Each natural number, including 1, is constructed by succession, that is, by adding 1 to the previous natural number. The number 1 is the first natural number after 0. It is the smallest positive integer, and smallest natural number. The prime factorization of 1 is 1. It is the first and smallest positive integer of the infinite sequence of natural numbers. It is considered a natural number, meaning it's a positive integer obtained by adding 1 to itself one or more times. The Roman numeral for one is I. Jun 11, 2026 · The number one, often written as '1', is a fundamental concept in mathematics. Babylonian number 1 In scientific notation, it is written as 1 × 10 0. sp4vqdfy, aaamj, jnmmm3, cqvf, aq7g, gq7l, x0whip, yo, ptfr, ca,