'''Prime numbers''' are those [[natural number]]s that are divisible by only 1 and itself. The only even prime number is 2. There is no upper limit to the quantity of primes, but there is no known formula for deriving the nth prime.
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'''Prime numbers''' are those [[natural number]]s that are divisible by only 1 and itself. The only even prime number is 2. There is no upper limit to the quantity of primes, but there is no known formula for deriving the nth prime. Euler commented "Mathematicians have tried in vain to this day to discover some order in the sequence of prime numbers, and we have reason to believe that it is a mystery into which the mind will never penetrate".
==The Prime Numbers==
==The Prime Numbers==
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==The Largest Known Prime==
==The Largest Known Prime==
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The largest known prime is ''2<sup>32582657</sup>-1''
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The largest known prime is ''2<sup>32582657</sup>-1''.