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.

5 days ago · 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).

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.

Jun 17, 2026 · The meaning of THREE is a number that is one more than 2. How to use three in a sentence.

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 ...

Definition of three number in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

2 days 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).

Definition of 3 in the Definitions.net dictionary. Meaning of 3. What does 3 mean? Information and translations of 3 in the most comprehensive dictionary definitions resource on the web.

Number 3 is the number of good fortune. The Pythagoreans taught that the number three was the first true number. Three is the first number that forms a geometrical figure – the triangle. Three was …