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2014-12-30, 17:36
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#1 |
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May 2012
816 Posts |
New ECPP record (currently: 59,798 digits)
Peter Kaiser and Paul Underwood certified the primality of Lucas(140057) with Primo 4.1.0.
This is a 29271 decimal digit number! It is the new ECPP record. See http://www.ellipsa.eu |
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2014-12-31, 11:27
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#2 |
"Phil"
Sep 2002
Tracktown, U.S.A.
25·5·7 Posts |
Congratulations to Peter and Paul, and also to Marcel Martin for the first ECPP record done by Primo!
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2014-12-31, 12:51
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#3 |
Jun 2009
10101111002 Posts |
Thanks!
It's not the first ECPP record set with Primo, there were several in the early 2000's. See the bottom of this page: http://ellipsa.eu/public/primo/top20.html |
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2015-09-16, 03:31
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#4 |
Sep 2002
Database er0rr
2×2,243 Posts |
http://www.ellipsa.eu/public/primo/top20.html shows a new world record for ECPP. Congratulations to Philippe Alsina, Pierre Gazzano, Nik Lygeros, Olivier Rozier and André Solaris for their certification of Lehmer-Ramanujan(331,2129) with 29,492 decimal digits.
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2015-09-23, 15:54
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#5 |
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Sep 2002
Database er0rr
2·2,243 Posts |
I pleased to announce a new ECPP record at 30,950 decimal digits. The proof of the Lucas Number V(148091) was started on 5th of January this year. It took until today to prove it using a 4x AMD 6174 (48 cores at 2.2GHz) and 100 days additionally spent in parallel on a AMD 1090T (6 cores at 3.2GHz) running phase 2 work.
I also congratulate Marcel Martin for his Primo program, which worked flawlessly. 
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2015-09-24, 05:43
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#6 |
Jan 2008
France
10010101002 Posts |
Congrats! You beat CIDE record
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2016-11-23, 13:55
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#7 |
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Sep 2002
Database er0rr
2×2,243 Posts |
It is with great pleasure that I proudly announce a new record ECPP certification of a 34093 digits prime. Arranged in a 331 by 103 grid the digits of the prime depicts the Mersenne prime exponent 57,885,161.
The certification process took 14 months using a 4 x AMD 6174 (48 cores at 2.2 GHz) and 200 days additionally spent in parallel on an AMD 1090T (6 cores at 3.2 GHz) running phase 2 work. Why 57,885,161 and not 74,207,281? The answer: Although the latter Mersenne prime exponent was reported to the server at about the same time certification started, it was not for another 3 months that the new exponent was noticed by a human! Rather than starting with the bigger exponent, I decided to continue with the smaller one. Besides, another even bigger one could have been found had I started with 74,207,281, or still might be discovered. Again, Marcel Martin's Primo worked as a program par execellence. Last fiddled with by paulunderwood on 2016-11-23 at 14:15 Reason: Wrong exponent given |
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2016-11-23, 14:10
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#8 | |
Jun 2003
22·32·151 Posts |
Quote:
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2016-11-23, 14:16
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#9 | |
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Sep 2002
Database er0rr
2·2,243 Posts |
Quote:
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2016-11-23, 23:09
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#10 |
Dec 2012
32·31 Posts |
Congratulations! That's an interesting choice of number.
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2016-11-24, 01:55
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#11 |
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P90 years forever!
Aug 2002
Yeehaw, FL
2×33×151 Posts |
I almost didn't read this addition to the thread - figuring it was just another bump in ECPP records.
However, your choice was pretty cool. Thumbs up! |
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