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  1. 1 - Wikipedia

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

  2. 1 (number) - New World Encyclopedia

    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 …

  3. The number one - Britannica

    Other articles where the number one is discussed: Middle Eastern religion: Association of religion with the arts and sciences: The most perfect number was one, for by advancing from zero to one men …

  4. 1 - Wiktionary, the free dictionary

    Dec 9, 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 ultimately …

  5. Number 1 - Curious Math Facts and Interesting Properties

    Explore the curious properties of number 1, an odd number which is uniquely neither prime nor composite. Includes mathematical info, prime factorization, divisors, bases and much more!

  6. 1 Definition & Meaning - Merriam-Webster

    One John Doe made a speech. "Puma" and "cougar" are different names for one animal. The author and the main character are one and the same. : the first whole number above zero see Table of …

  7. 1 -- from Wolfram MathWorld

    Dec 22, 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 that it is …

  8. 1 - Definition, Meaning & Synonyms | Vocabulary.com

    3 days ago · 1 Add to list Definitions of 1 noun the smallest whole number or a numeral representing this number synonyms: I, ace, one, single, unity

  9. 1 (number) | Math Wiki | Fandom

    1 is the only positive integer that is neither prime nor composite. 1 is a divisor of any integer. Not only that, but if you do , it will always equal 1. 1 is the only odd practical number. 1 can't be used as the …

  10. What Is 1? Definition, Facts & Examples for Kids - 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 …