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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 ultimately …

  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 Indians, who …

  4. 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 equals itself, …

  5. Number 1 - Curious Math Facts and Interesting Properties

    Feb 5, 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 divisors.

  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. 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 …

  8. 1 -- from Wolfram MathWorld

    4 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 that it is usually …

  9. Properties of the number 1 - numberempire.com

    Properties of the number 1: factors, prime check, fibonacci check, bell number check, binary, octal, hexadecimal representations and more.

  10. The number 1 for kids - Learning to count - YouTube

    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. How...