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  1. 3 - Wikipedia

    3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number.

  2. 3 (number) - New World Encyclopedia

    Three is the first odd prime number, and the second smallest prime. It is both the first Fermat prime (2 2º + 1) and the first Mersenne prime (2² - 1), as well as the first lucky prime.

  3. The number three - Britannica

    Nov 28, 2025 · The number 3 is a very mystical and spiritual number featured in many folktales (three wishes, three guesses, three little pigs, three bears, three billy goats gruff).

  4. THREE Definition & Meaning - Merriam-Webster

    Dec 4, 2016 · The meaning of THREE is a number that is one more than 2. How to use three in a sentence.

  5. 3 - definition of 3 by The Free Dictionary

    Noun 1. 3 - the cardinal number that is the sum of one and one and one tercet, ternary, ternion, terzetto, three, threesome, trey, triad, trine, trinity,...

  6. Number 3 Meaning of the Number 3 - Fun Facts

    Significance and Meaning of number 3. Number Symbolism. Fun facts about the number three. Number 3 in superstition.

  7. 3 - Wiktionary, the free dictionary

    3 days ago · A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ३ (3)), from a cursive form of three lines to represent the number three. See 3 § Evolution of the Arabic digit for more.

  8. 3 (number) Facts for Kids

    Many cultures around the world see the number three as important or special. The number three appears in many famous stories, beliefs, and traditions. Here are some examples: The Three …

  9. 3 -- from Wolfram MathWorld

    Dec 3, 2025 · 3 is the only integer which is the sum of the preceding positive integers (1+2=3) and the only number which is the sum of the factorials of the preceding positive integers (1!+2!=3).

  10. Is 3 a prime number? - Numbers Education

    Since 3 is a prime number, 3 is also a deficient number, that is to say 3 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 3 without 3 itself (that is 1, by definition!).