20141230, 17:36  #1 
May 2012
8_{16} 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 
20141231, 11:27  #2 
"Phil"
Sep 2002
Tracktown, U.S.A.
2^{5}·5·7 Posts 
Congratulations to Peter and Paul, and also to Marcel Martin for the first ECPP record done by Primo!

20141231, 12:51  #3 
Jun 2009
1010111100_{2} 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 
20150916, 03:31  #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 LehmerRamanujan(331,2129) with 29,492 decimal digits.

20150923, 15:54  #5 
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. 
20150924, 05:43  #6 
Jan 2008
France
1001010100_{2} Posts 
Congrats! You beat CIDE record

20161123, 13:55  #7 
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 20161123 at 14:15 Reason: Wrong exponent given 
20161123, 14:10  #8 
Jun 2003
2^{2}·3^{2}·151 Posts 

20161123, 14:16  #9 
Sep 2002
Database er0rr
2·2,243 Posts 

20161123, 23:09  #10 
Dec 2012
3^{2}·31 Posts 
Congratulations! That's an interesting choice of number.

20161124, 01:55  #11 
P90 years forever!
Aug 2002
Yeehaw, FL
2×3^{3}×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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