Quote:
Originally Posted by AquaPython
3!!!!
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Three is the first odd prime number,[1] and the second smallest prime. It is both the first Fermat prime (22n +-1) and the first Mersenne prime (22 − 1), as well as the first lucky prime. However, it's the second Sophie Germain prime, the second Mersenne prime exponent, the second factorial prime (2! +-1), the second Lucas prime, the second Stern prime.
