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2020-07-13, 22:48
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#210 |
"Sam"
Nov 2016
32410 Posts |
Another lucky hit:
26*3^1700041+1 may be prime, but N divides 3^((N-1)/3))-1, restarting with a=5 Time : 938.494 sec. 26*3^1700041+1 is prime! (811128 decimal digits) Time : 946.942 sec. |
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2020-08-01, 17:44
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#211 |
Jun 2015
Vallejo, CA/.
2·7·71 Posts |
Largest prime for 2020 (till now)
TO BE VERIFIED
Congratulations to Serge Batalov. Gaussian Mersenne. #20 on the current list. 215317227 + 27658614 + 1 4,610,945 digits. |
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2020-08-01, 20:16
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#212 | |
Dec 2011
After milion nines:)
5A516 Posts |
Quote:
Serge never publish prime until he is 101% sure it is prime :) |
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2020-08-02, 17:36
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#213 | |
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Jun 2015
Vallejo, CA/.
2·7·71 Posts |
Quote:
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2020-10-30, 22:13
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#214 |
Sep 2002
Database er0rr
72338 Posts |
Congrats to Scott Brown for the "321+" prime, 3*2^16408818+1, which was 6.5 years in the making by PrimeGrid.
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2020-11-17, 21:06
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#215 |
Mar 2006
Germany
23·3·112 Posts |
Seems a new prime for the Riesel Problem was found: 146561*2^11280802-1 found by PrimeGrid's project currently in verify status.
This is, when proven, almost 3 years after the last found for this problem. |
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2020-12-01, 17:46
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#216 |
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Sep 2002
Database er0rr
373910 Posts |
"P587124"
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2020-12-01, 19:05
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#217 | |
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"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36
1011010110012 Posts |
Quote:
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2020-12-01, 23:49
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#218 | |
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Mar 2006
Germany
23·3·112 Posts |
Quote:
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2020-12-11, 23:32
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#219 |
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Dec 2011
After milion nines:)
5×172 Posts |
New 1.43M repdigit prime will appear soon :)
It was time to find something bigger after 5 years searching in this sequence :) |
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2020-12-11, 23:43
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#220 |
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
2×7×677 Posts |
Good! Congratulations!
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