8191

This number is a prime.

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+ The smallest Mersenne prime corresponding to an emirp (M(13) = 8191). [Loungrides]

+ 8191 is a Fibonacci 13-step number. Note that 2^13-1 = 8191, making it a Mersenne prime also. Will Mersenne primes continue to appear in this way? [Loungrides and Honaker]

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