3 - Wikipedia 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
3 (number) - New World Encyclopedia 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 three - Britannica Learn about this topic in these articles: 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) In ancient Babylon the three primary gods were Anu, Bel (Baal), and Ea, representing Heaven, Earth, and…
3 -- from Wolfram MathWorld 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)
Calendario