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2022-02-19, 12:15
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#23 |
"Carlos Pinho"
Oct 2011
Milton Keynes, UK
3×1,721 Posts |
Congratulations Dr. Ryan.
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2022-06-16, 13:02
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#24 |
Mar 2006
Germany
2·52·61 Posts |
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. |
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2022-06-17, 03:40
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#25 | |
Jun 2015
Vallejo, CA/.
33×43 Posts |
Quote:
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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2022-06-20, 10:05
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#26 | |
"Gary"
May 2007
Overland Park, KS
12,161 Posts |
Quote:
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2022-06-20, 21:59
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#27 |
Dec 2011
After 1.58M nines:)
2×5×167 Posts |
And there is new one :)
https://primes.utm.edu/primes/page.php?id=134068 63838 *5^3887851-1 2717497 digits, current 99 rank |
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