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] It has …

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).

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, …

See the number 3 with objects that sometimes come to life for a fun surprise! This early math video works great as a "Number of the Day" lesson or as an exciting early math activity for preschool...

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 …

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

The number 3 is a natural number following 2 and preceding 4. It is an odd and prime number, often symbolically significant across different religions and cultures.

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).

Free grade 3 math worksheets Our third grade math worksheets support numeracy development and introduce division, decimals, roman numerals, calendars and concepts in measurement and geometry.