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  1. 1 - Wikipedia

    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.

  2. 1 (number) - Simple English Wikipedia, the free encyclopedia

    One (1) is the first natural number, followed by two. The Roman numeral for one is I.

  3. 1 (number) - New World Encyclopedia

    One is the only 1-perfect number (see multiply perfect number). By definition, 1 is the magnitude or absolute value of a unit vector and a unit matrix (more usually called an identity matrix). …

  4. 1 - Wiktionary, the free dictionary

    Jun 20, 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 …

  5. 1 -- from Wolfram MathWorld

    Jun 18, 2025 · 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 …

  6. 1 (number) | Math Wiki - Fandom

    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...

  7. 1 - definition of 1 by The Free Dictionary

    1. 1 - the smallest whole number or a numeral representing this number; "he has the one but will need a two and three to go with it"; "they had lunch at one"

  8. The number one | number | Britannica - Encyclopedia Britannica

    In number symbolism: 1 Not surprisingly, the number 1 is generally treated as a symbol of unity. Therefore, in monotheistic religions, it often symbolizes God or the universe.

  9. Number 1 - Facts about the integer - Numbermatics

    1 is an odd number which is uniquely neither prime nor composite. It is known as the multiplicative identity or unit. It’s also the only positive number with no other divisors.

  10. What is 1: Learn Definition, Facts & Examples - Vedantu

    One is a number in Mathematics that represents the quantity or the value of 1. While counting, the number 1 is succeeded by 2 which is then succeeded by 3 and so on. Before learning some …