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If a number can be written as 2a^2+1 or as 3b^3+1, it must be of the form 648k^6+1. This is prime for k = 3, 4 and 5 [Hartley]


  Submitted: 2003-02-19 00:28:30;   Last Modified: 2008-01-30 11:28:00.

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