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Old 2020-02-19, 23:14   #1933
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storm5510's Avatar
Aug 2009
Not U. + S.A.

2,383 Posts

Originally Posted by Cruelty View Post
25*2^5152151-1 is prime! (1550954 decimal digits) - I've just noticed that previous prime for this k was reported by me 11+ years ago.
There is a k = 25 entry in the new Wiki Riesel Prime database. It is unassigned. The last update was in 2014. Perhaps you could claim it and bring it up-to-date?
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