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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 - Wiktionary, the free dictionary

    Jan 23, 2026 · 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. 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 …

  4. 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 …

  5. Number 1 - Curious Math Facts and Interesting Properties

    Jan 18, 2026 · In a nutshell 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 …

  6. What Is 1? Definition, Facts & Examples for Kids - Vedantu

    Discover what the number 1 means with fun examples. Learn how to write 1 in words and boost your maths skills with Vedantu!

  7. The number one - Britannica

    The number 1 symbolized unity and the origin of all things, since all other numbers can be created from 1 by adding enough copies of it. For example, 7 = 1 + 1 + 1 + 1 + 1 + 1 + 1.

  8. 1 -- from Wolfram MathWorld

    Jan 29, 2026 · 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 …

  9. About The Number 1 - numeraly.com

    The number 1 is unique in many ways, and holds a fascinating position in the world of mathematics, science, and culture. As the first whole number, it is the foundation for all other …

  10. 1 - Definition, Meaning & Synonyms | Vocabulary.com

    "1." Vocabulary.com Dictionary, Vocabulary.com, https://www.vocabulary.com/dictionary/1. Accessed 03 Feb. 2026. loading examples...