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Old 2016-03-16, 21:33   #3
Joe O
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Aug 2002

10158 Posts

Aus_Karlos found the world record base 5 mega prime 92158*5^2145024+1. This prime is 1,499,313 digits long.

This eliminates k=92158 from the base 5 Sierpinski problem, leaving 33 k's remaining. The base 5 Riesel problem has 77 k's remaining.
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