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 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.

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

The meaning of THREE is a number that is one more than 2. How to use three in a sentence.

Dec 21, 2025 · 3 (plural 3s) (sports, skateboarding, snowboarding, skiing) Clipping of 360 (“360° spin”). Replaces the letter E / e in leetspeak.

Explore the curious properties of number 3, an odd number which is prime. Includes mathematical info, prime factorization, divisors, bases and much more! A fascinating reference for students, …

Dec 22, 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 …

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

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 …

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, …