mersenneforum.org  

Go Back   mersenneforum.org > Fun Stuff > Lounge

Reply
 
Thread Tools
Old 2020-12-15, 13:43   #1
ZFR
 
ZFR's Avatar
 
Feb 2008
Bray, Ireland

139 Posts
Cool A treatise on the advantages of factoring over PRPing/LLing

If you look for Mersenne primes, you should be prepared to find nothing, and nothing, and nothing. But after I've started TFing on my GPU this year, it's been like a little Christmas every 3 weeks or so*.

*Your mileage may vary. Always read the label.

Last fiddled with by ZFR on 2020-12-15 at 13:43
ZFR is offline   Reply With Quote
Old 2020-12-15, 13:48   #2
retina
Undefined
 
retina's Avatar
 
"The unspeakable one"
Jun 2006
My evil lair

607510 Posts
Default

That's great. Until all the easy factors are found. Then it is back to having Christmas only once per year.
retina is offline   Reply With Quote
Old 2020-12-15, 14:10   #3
M344587487
 
M344587487's Avatar
 
"Composite as Heck"
Oct 2017

2F916 Posts
Default

I get similar satisfaction from DC. An exponent gets squared away every few days.
M344587487 is offline   Reply With Quote
Old 2020-12-15, 14:37   #4
kriesel
 
kriesel's Avatar
 
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest

132×29 Posts
Default

The last 25 years has been more fruitful for Mersenne prime finding, than any other similar length time span in history. There have been centuries with no finds. https://www.mersenne.org/primes/
kriesel is online now   Reply With Quote
Old 2020-12-15, 17:49   #5
Runtime Error
 
Sep 2017
USA

227 Posts
Default

+1

Similarly, P-1 is super rewarding, and additionally it has the lottery aspect of finding massive factors!

Last fiddled with by Runtime Error on 2020-12-15 at 17:51
Runtime Error is offline   Reply With Quote
Old 2020-12-15, 18:10   #6
ZFR
 
ZFR's Avatar
 
Feb 2008
Bray, Ireland

8B16 Posts
Default

Quote:
Originally Posted by Runtime Error View Post
Similarly, P-1 is super rewarding, and additionally it has the lottery aspect of finding massive factors!
Oh yeah. Starting this week I dedicated a worker for P-1. There is a Top 100 factor hidden out there and I have a... um... er... the-prime95-equivalent-of-a-bullet with its name on it.
ZFR is offline   Reply With Quote
Old 2020-12-15, 20:58   #7
VBCurtis
 
VBCurtis's Avatar
 
"Curtis"
Feb 2005
Riverside, CA

2×5×467 Posts
Default

Quote:
Originally Posted by kriesel View Post
The last 25 years has been more fruitful for Mersenne prime finding, than any other similar length time span in history. There have been centuries with no finds. https://www.mersenne.org/primes/
Who knew computers were so helpful with, er, computation?
VBCurtis is offline   Reply With Quote
Old 2020-12-25, 15:58   #8
ZFR
 
ZFR's Avatar
 
Feb 2008
Bray, Ireland

139 Posts
Default

Quote:
Originally Posted by ZFR View Post
If you look for Mersenne primes, you should be prepared to find nothing, and nothing, and nothing. But after I've started TFing on my GPU this year, it's been like a little Christmas every 3 weeks or so*.

*Your mileage may vary. Always read the label.
Ta da.

Code:
UID: ZFR/Daria, M103461923 has a factor: 35104615462903630715167 [TF:74:75:mfaktc 0.21 barrett76_mul32_gs]
It's a little Christmas, on Christmas.
ZFR is offline   Reply With Quote
Old 2021-01-08, 16:36   #9
lisanderke
 
Oct 2020
Belgium

7 Posts
Default

I've been doing a lot of 72,74 factoring on The bigtm numbers and I have to say, it's very satisfying to see a factor pop up every 20 or so minutes!
lisanderke is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
factoring 2ⁿ-2 equivalent to factoring 2ⁿ-1(I think) baih Miscellaneous Math 9 2020-09-21 07:11
OpenCL GPU P-1 Factoring and ECM Factoring xx005fs GPU Computing 3 2018-10-27 14:49
Problem with LLR 3.8x for PRPing! nuggetprime Conjectures 'R Us 6 2011-01-22 23:36
Has anyone seen my latest treatise? davieddy Lounge 0 2011-01-21 19:29
Sieving, PRPing, and what I feel is a common misunderstanding jasong Sierpinski/Riesel Base 5 10 2006-12-27 00:41

All times are UTC. The time now is 14:16.

Thu Feb 25 14:16:13 UTC 2021 up 84 days, 10:27, 0 users, load averages: 4.10, 4.44, 4.21

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.