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# 2917

This number is a prime.

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The largest known prime p equal to the digital length of a Mersenne prime, i.e., of the 21st Mersenne prime. Note that the order of this Mersenne prime, i.e., 21, followed by p and p followed by 21 are also primes, i.e., 212917 and 291721. [Loungrides]
Submitted: 2012-02-18 09:17:01; Last Modified: 2018-05-25 19:37:36.

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