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The larger of only two primes of form n^2+1 concatenated from two consecutive double-digit primes, i.e., 3137=56^2+1. The other is 2917 = 54^2+1. [Loungrides]


  Submitted: 2013-06-13 09:39:02;   Last Modified: 2018-05-16 06:57:48.

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