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Old 2020-02-06, 02:47   #1920
paulunderwood
 
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Sep 2002
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69*2^6639971-1 is prime! (1998833 decimal digits) Time : 2777.921 sec.

This prime has taken many years for Vincent and me to find, but, oh boy, is it worth it!




Last fiddled with by paulunderwood on 2020-02-06 at 07:29
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