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2014-03-25, 16:02
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#133 |
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
2·47·101 Posts |
Found a couple small "EQ" (Eisenstein-Mersenne cofactors, OEIS A125743/4) (probable) primes:
(3^152809+3^76405+1)/7 is a 2-PRP! (3^272141-3^136071+1)/7 is a 2-PRP! (3^505823+3^252912+1)/7 is a 2-PRP! (241339 digits) (3^1353449-3^676725+1)/7 is a 2-PRP! (645759 decimal digits) Time: 10953.669 sec. Notes: 1. The running time. With most tools you will get > 20000 sec. This is because of the implementation of FFT modulo 33p+1 with only final step done modulo N. 2. All of similar (composite or prime) numbers are 3-PRPs. Re-validating now with -b5, -b11. Last fiddled with by Batalov on 2014-03-25 at 20:46 Reason: merged |
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2014-05-19, 07:49
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#134 |
Dec 2011
After milion nines:)
1,451 Posts |
Small prime, but for me it is huge :)
Fifth in his class in the world (currently) of course :)) 94 followed but 466002 number nine :) |
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2014-10-06, 13:38
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#137 |
May 2009
Russia, Moscow
2,593 Posts |
http://primes.utm.edu/primes/page.php?id=118597
Congratulations to my teammate! |
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2015-04-30, 22:07
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#138 |
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Dec 2011
After milion nines:)
1,451 Posts |
99*10^303255-1 is prime! (303257 decimal digits, P = 33) Time : 2119.757 sec.
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2015-05-01, 05:51
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#139 |
Nov 2003
2×1,811 Posts |
Hi Pepi
Congrats, but it seems it's not enough for top 20 near-repdigits: http://primes.utm.edu/top20/page.php?id=15 Last fiddled with by Kosmaj on 2015-05-01 at 05:51 |
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2015-05-01, 09:23
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#140 | |
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Dec 2011
After milion nines:)
1,451 Posts |
Quote:
Hunting is continued :) |
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2015-05-16, 03:48
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#141 |
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Dec 2011
After milion nines:)
1,451 Posts |
Last was not in Top 5000 , but this fellow is :)
92*10^544905-1 is prime! (544907 decimal digits, P = 5) Time : 7082.969 sec. Reported and verified on Top 5000 :) Last fiddled with by pepi37 on 2015-05-16 at 03:48 |
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2015-05-16, 04:33
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#142 | |
Sep 2002
Database er0rr
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Quote:
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2015-05-16, 04:35
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#143 | |
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Dec 2011
After milion nines:)
1,451 Posts |
Quote:
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