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Mathematics

Perfect Numbers and Mersenne Primes

Quick fact

Every even perfect number is completely determined by a Mersenne prime, and the largest known perfect numbers are among the largest numbers in existence—each new one found corresponds to a brand-new Mersenne prime.

Why this is interesting

You know that 6 = 1 + 2 + 3, but did you know that this simple equality ties into the largest prime numbers ever discovered?