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. [citation …

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

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.

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,...

Dec 21, 2025 · 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 …

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

Properties of the number 3: factors, prime check, fibonacci check, bell number check, binary, octal, hexadecimal representations and more.

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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