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Old 2019-02-07, 13:25   #6
rudy235
 
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Jun 2015
Vallejo, CA/.

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Quote:
Originally Posted by GP2 View Post
From OEIS A028491, Paul Bourdelais has discovered a new base-3 repunit (probable) prime:

(3^2215303 − 1) /2 is a PRP
1'057,967 digits
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