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.

Apr 20, 2026 · 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).

1 day ago · 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).

Feb 5, 2026 · Explore the hidden properties of 3, an odd prime number. Includes Prime Factorization, Divisors, Bases and Fun Facts for students, number lovers and curious minds.

Define 3. 3 synonyms, 3 pronunciation, 3 translation, English dictionary definition of 3. Noun 1. 3 - the cardinal number that is the sum of one and one and one ...

THREE definition: a cardinal number, 2 plus 1. See examples of three used in a sentence.

Mar 29, 2026 · 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 …

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

Nov 3, 2020 · The number 3 is a lucky number for many across the world, but it's also just as unlucky for others. Here are 10 fun facts about the number 3.