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Old 2022-06-17, 03:40   #25
rudy235
 
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Jun 2015
Vallejo, CA/.

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Quote:
Originally Posted by kar_bon View Post
One down for the Riesel-base 5 conjecture:

64598 * 5^3769854-1 is prime, 2,635,020 digits, found on 2022-06-14 by PrimeGrid.

Curious: the 5 digits of the k-value appear also in the n-value.

Awaiting official announcement, still some tasks open for this k.

Congratulations!
This is the 97th prime with between 2 million and 3 million digits.

There are 10 primes in total (in that range) of the form k* 5^n +/- 1. (8 with -1 and 2 with +1)
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