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.

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Jun 13, 2026 · 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).

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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 (Magi) who …

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.

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.

Calculate 3 factorial. Find the value of 3!, trailing zeros, and number of digits. Free factorial calculator up to 10,000.

:3 is an emoticon used to represent a Coy Smile. This page explains how :3 is used in texting or on apps like TikTok or Instagram.

Math Calculator from Mathway will evaluate various math problems from basic arithmetic to advanced trigonometric expressions.