mersenneforum.org  

Go Back   mersenneforum.org > Prime Search Projects > Riesel Prime Search

Reply
 
Thread Tools
Old 2010-04-04, 16:56   #12
pb386
 
pb386's Avatar
 
Nov 2003

23×163 Posts
Default

1239*2^815957-1 (245631 digits)
pb386 is offline   Reply With Quote
Old 2010-04-05, 12:42   #13
amphoria
 
amphoria's Avatar
 
"Dave"
Sep 2005
UK

53268 Posts
Default

4067*2^568776-1 (171223 digits)
4063*2^569491-1 (171438 digits)
amphoria is offline   Reply With Quote
Old 2010-04-05, 19:13   #14
pb386
 
pb386's Avatar
 
Nov 2003

23×163 Posts
Default

1253*2^817490-1 (246093 digits)
1137*2^817593-1 (246124 digits)
1085*2^817644-1 (246139 digits)
pb386 is offline   Reply With Quote
Old 2010-04-06, 18:08   #15
amphoria
 
amphoria's Avatar
 
"Dave"
Sep 2005
UK

2×19×73 Posts
Default

2185*2^764875-1 (230254 digits)
1405*2^765505-1 (230444 digits)
amphoria is offline   Reply With Quote
Old 2010-04-07, 05:18   #16
amphoria
 
amphoria's Avatar
 
"Dave"
Sep 2005
UK

2·19·73 Posts
Default

2093*2^765710-1 (230505 digits)
amphoria is offline   Reply With Quote
Old 2010-04-07, 22:29   #17
amphoria
 
amphoria's Avatar
 
"Dave"
Sep 2005
UK

53268 Posts
Default

9th Drive:

29445*2^627251-1
amphoria is offline   Reply With Quote
Old 2010-04-09, 04:22   #18
amphoria
 
amphoria's Avatar
 
"Dave"
Sep 2005
UK

2·19·73 Posts
Default

9th Drive:

14895*2^627529-1 (188910 digits)
amphoria is offline   Reply With Quote
Old 2010-04-09, 16:25   #19
amphoria
 
amphoria's Avatar
 
"Dave"
Sep 2005
UK

1010110101102 Posts
Default

4039*2^571923-1 (172170 digits)
amphoria is offline   Reply With Quote
Old 2010-04-09, 16:57   #20
Cruelty
 
Cruelty's Avatar
 
May 2005

2×809 Posts
Default

59*2^3408416-1 (1026038 digits) so far it's the smallest known megaprime
Verification using PFGW:
Code:
Primality testing 59*2^3408416-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 7, base 6+sqrt(7)
Running N+1 test using discriminant 7, base 10+sqrt(7)
Special modular reduction using FFT length 224K on 59*2^3408416-1
Calling N+1 BLS with factored part 100.00% and helper 0.00% (300.00% proof)
59*2^3408416-1 is prime! (110852.6366s+0.0192s)
Cruelty is offline   Reply With Quote
Old 2010-04-09, 17:41   #21
VBCurtis
 
VBCurtis's Avatar
 
"Curtis"
Feb 2005
Riverside, CA

3·5·281 Posts
Default

Quote:
Originally Posted by Cruelty View Post
59*2^3408416-1 (1026038 digits) so far it's the smallest known megaprime
Verification using PFGW:
Code:
Primality testing 59*2^3408416-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 7, base 6+sqrt(7)
Running N+1 test using discriminant 7, base 10+sqrt(7)
Special modular reduction using FFT length 224K on 59*2^3408416-1
Calling N+1 BLS with factored part 100.00% and helper 0.00% (300.00% proof)
59*2^3408416-1 is prime! (110852.6366s+0.0192s)
Wowwwwwwwww.
Nice find, sir.
-Curtis
VBCurtis is offline   Reply With Quote
Old 2010-04-09, 21:26   #22
Beyond
 
Dec 2002

1101111002 Posts
Default

Quote:
Originally Posted by Cruelty View Post
59*2^3408416-1 (1026038 digits) so far it's the smallest known megaprime
Verification using PFGW:
Code:
Primality testing 59*2^3408416-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 7, base 6+sqrt(7)
Running N+1 test using discriminant 7, base 10+sqrt(7)
Special modular reduction using FFT length 224K on 59*2^3408416-1
Calling N+1 BLS with factored part 100.00% and helper 0.00% (300.00% proof)
59*2^3408416-1 is prime! (110852.6366s+0.0192s)
Congrats!
Beyond is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Inefficient behaviour in yafu when doing large NFS with lots of threads 2147483647 YAFU 3 2016-12-25 21:44
Lots of roundoff errors TheMawn Software 18 2014-08-16 03:54
POST LOTS AND LOTS AND LOTS OF PRIMES HERE lsoule Riesel Prime Search 1999 2010-03-17 22:33
lots of large primes Peter Hackman Factoring 2 2008-08-15 14:26
How do I get computer to do lots of little tasks? jasong Information & Answers 4 2007-10-04 20:40

All times are UTC. The time now is 01:09.

Sun Jul 12 01:09:52 UTC 2020 up 108 days, 22:42, 0 users, load averages: 1.20, 1.06, 1.10

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.