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.

1 (un) est l' entier naturel représentant une entité seule. « Un » fait quelquefois référence à l'unité, et « unitaire » est quelquefois utilisé comme un adjectif dans ce sens (par exemple, un …

Educational video for children to learn the number 1. The little ones will learn how to trace number 1, how to pronounce it and also how to count with a series of super fun examples.

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 …

Pronunciation of the number 1. One (1) is the first natural number, followed by two. The Roman numeral for one is I. In mathematics, the number one is the multiplicative identity. [1] . It is also …

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 …

3 days ago · Although the number 1 used to be considered a prime number, it requires special treatment in so many definitions and applications involving primes greater than or equal to 2 …

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 …

One is the beginning – the very first of all numbers. The 1 can be recognized in almost any written language, even when all the other single digits are written very differently.