mersenneforum.org  

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

Reply
 
Thread Tools
Old 2020-06-18, 10:24   #1948
matzetoni
 
matzetoni's Avatar
 
Feb 2019

5B16 Posts
Smile

Quote:
You tested only k=3329 from n=3330000?
For a Nash weight that low you tested only 516 n-values to find such prime. Lucky hit.
I had testing going on for 6 different k's, so I tested more like 3000-4000 candidates overall, still very lucky find. I was also surprised to find a prime with the k that had the lowest weight of these 6 k's.
matzetoni is offline   Reply With Quote
Old 2020-07-12, 05:22   #1949
carpetpool
 
carpetpool's Avatar
 
"Sam"
Nov 2016

52×13 Posts
Post

273*2^2024810-1 is prime! (609531 decimal digits) Time : 1198.071 sec.
carpetpool is offline   Reply With Quote
Old 2020-07-13, 14:05   #1950
Thomas11
 
Thomas11's Avatar
 
Feb 2003

190810 Posts
Default

233*2^2426512-1 (730456 digits)
Thomas11 is offline   Reply With Quote
Old 2020-08-18, 16:32   #1951
VBCurtis
 
VBCurtis's Avatar
 
"Curtis"
Feb 2005
Riverside, CA

22·1,249 Posts
Default

99*2^3026660-1 (911118 digits)
99*2^3029959-1 (912111 digits)
VBCurtis is offline   Reply With Quote
Old 2020-08-18, 17:11   #1952
pinhodecarlos
 
pinhodecarlos's Avatar
 
"Carlos Pinho"
Oct 2011
Milton Keynes, UK

3×1,657 Posts
Default

Quote:
Originally Posted by VBCurtis View Post
99*2^3026660-1 (911118 digits)
99*2^3029959-1 (912111 digits)
Wow!
pinhodecarlos is offline   Reply With Quote
Old 2020-08-18, 17:49   #1953
pepi37
 
pepi37's Avatar
 
Dec 2011
After milion nines:)

148010 Posts
Default

Quote:
Originally Posted by VBCurtis View Post
99*2^3026660-1 (911118 digits)
99*2^3029959-1 (912111 digits)
Nice double luck!
Congratulations
pepi37 is online now   Reply With Quote
Old 2020-11-04, 06:56   #1954
kuratkull
 
kuratkull's Avatar
 
Mar 2007
Estonia

9516 Posts
Default

195*2^4373994-1 is prime! (1316706 digits)

https://primes.utm.edu/primes/page.php?id=131376

Non-essential fun facts:
1) k=195 is the highest Nash weight k in RSP k<300, with a weight of 4106, followed by k=45 at weight 3747.
2) The last prime for k=195 was for n=1983875, found in 2014 by Peter Benson
3) My first prime since Aug 2008 (152521 digits) - i took a ca. 11 year hiatus from prime searching
4) First prime since I restarted prime searching in summer/autumn 2019, was really waiting for this
5) My first megaprime
kuratkull is offline   Reply With Quote
Old 2020-11-04, 21:27   #1955
pepi37
 
pepi37's Avatar
 
Dec 2011
After milion nines:)

23×5×37 Posts
Default

Quote:
Originally Posted by kuratkull View Post
195*2^4373994-1 is prime! (1316706 digits)

https://primes.utm.edu/primes/page.php?id=131376

Non-essential fun facts:
1) k=195 is the highest Nash weight k in RSP k<300, with a weight of 4106, followed by k=45 at weight 3747.
2) The last prime for k=195 was for n=1983875, found in 2014 by Peter Benson
3) My first prime since Aug 2008 (152521 digits) - i took a ca. 11 year hiatus from prime searching
4) First prime since I restarted prime searching in summer/autumn 2019, was really waiting for this
5) My first megaprime

So at the end effort was rewarded!
Congratulations!
pepi37 is online now   Reply With Quote
Old 2020-11-12, 15:44   #1956
Thomas11
 
Thomas11's Avatar
 
Feb 2003

190810 Posts
Default

From our 1st megabit drive:

111*2^3060238-1 (921226 digits)
65*2^3080952-1 (927461 digits)
57*2^3093440-1 (931220 digits)
Thomas11 is offline   Reply With Quote
Old 2021-01-26, 12:00   #1957
Cruelty
 
Cruelty's Avatar
 
May 2005

65C16 Posts
Default

25*2^5658915-1 is prime! (1703505 decimal digits)
Cruelty is offline   Reply With Quote
Old 2021-02-11, 04:58   #1958
Trilo
 
Trilo's Avatar
 
"W. Byerly"
Aug 2013
1423*2^2179023-1

10710 Posts
Default

55*2^2048305-1 is prime! (627441 digits)
Trilo is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
MemTest x86 spewing lots of errors Viliam Furik Hardware 7 2020-09-27 22:27
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 09:35.


Thu Oct 21 09:35:32 UTC 2021 up 90 days, 4:04, 1 user, load averages: 0.67, 0.93, 1.00

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, 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.