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.

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.

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).

Three is an important number for many cultures (groups of people living together). It is also a prime number. It is the first odd prime. In Roman numerals, it is III. three gifts of the wise men …

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Your guide to the number 3, an odd number which is prime. Mathematical info, prime factorization, fun facts and numerical data for STEM, education and fun.

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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,...

3 is a number, numeral, and glyph. 3, three, or III may also refer to: BBC Three, a British television channel. "Tres" (song) (English: 'Three'), by Juanes from La Vida... Es un Ratico, 2008.

Oct 28, 2025 · Factoring calculator finds all factors or divisors of a number. Use the factor calculator to find all factor pairs of any positive number. Factors calculator for factoring numbers.