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Old 2020-11-17, 16:18   #4
sweety439
 
"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36

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Quote:
Originally Posted by firejuggler View Post
at this size, primo isn't practical
Well, primo cannot handle numbers > 2^65536, or the repunit R49081 (=(10^49081-1)/9) will be already proven to be prime.
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