The use of three lines to denote the number 3 occurred in many writing systems, including some (like Roman and Chinese numerals) that are still in use. That was also the original

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).

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

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 …

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