20141230, 17:36  #1 
May 2012
2^{3} Posts 
New ECPP record
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.
1,117 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
29D_{16} 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
3×11×101 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 AndrĂ© Solaris for their certification of LehmerRamanujan(331,2129) with 29,492 decimal digits.

20150923, 15:54  #5 
Sep 2002
Database er0rr
D05_{16} 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
2^{4}·3·11 Posts 
Congrats! You beat CIDE record

20161123, 13:55  #7 
Sep 2002
Database er0rr
3·11·101 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
13·359 Posts 

20161123, 14:16  #9 
Sep 2002
Database er0rr
3·11·101 Posts 

20161123, 23:09  #10 
Dec 2012
2×139 Posts 
Congratulations! That's an interesting choice of number.

20161124, 01:55  #11 
P90 years forever!
Aug 2002
Yeehaw, FL
15546_{8} 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! 
Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
ECPPDJ  danaj  Computer Science & Computational Number Theory  58  20180206 21:52 
Can I just leave this here? (ECPP)  trhabib  Miscellaneous Math  6  20110819 16:34 
Fast ECPP  T.Rex  Math  6  20070625 16:42 
Where ECPP is needed?  nuggetprime  Information & Answers  9  20070406 16:22 
new ECPP article  R. Gerbicz  GMPECM  2  20060913 16:24 