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Old 2008-03-26, 21:36   #2
rogue's Avatar
Apr 2003
Between here and the

3·19·113 Posts

288*13^109217-1 is prime!!!

This proves that 302 is the lowest Riesel k for base 13.

BTW, it was found with Phil Carmody's phrot program on PPC and proved with PFGW.
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