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 needed]

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

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, coders, …

Dec 21, 2025 · Text style is forced with ︎ and emoji style with ️ . A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ३ (3)), from a cursive form of three lines to represent the …

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

Dec 3, 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 (1!+2!=3).

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 …

Math At Microsoft Education, we believe every student deserves the opportunity to thrive. Make math accessible for learners with powerful, inclusive tools designed to unlock potential and build …

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 …