1997

This number is a prime.

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1997: (1997, 2003) is the only non-titanic sexy pair of primes of form 2*10^p-p and 2*10^p+p, where p is a prime (p=3). [Loungrides]

Submitted: 2015-11-09 13:48:19;   Last Modified: 2019-04-15 06:41:50.
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