20201117, 05:40  #1 
Mar 2019
USA
56_{8} Posts 
GPU72 Largest 100 Factors Found
I was clicking around the site and found the "Largest 100 Factors Found" page interesting:
https://www.gpu72.com/reports/largest_factors/ Is that uptodate? If so, does it update automatically or is it something Chris updates manually? I only ask because the largest as of this writing is: 734277451864747167510502805298930545450478445879 I found a factor today of exponent 105032111: 499400852887245323683941126088449355702834653807158087 Unless of course, I am completely reading that wrong, which is entirely possible. It is all just so fascinating, and I have such a small grasp of it. 
20201117, 05:49  #2  
If I May
"Chris Halsall"
Sep 2002
Barbados
2×3×1,567 Posts 
Quote:
BTW, it's a complete fluke that I'm at the top of the list. There are many others putting in far more P1 efforts than myself; I just got lucky there. 

20201117, 05:50  #3  
Sep 2002
Database er0rr
3,533 Posts 
Quote:
Code:
? factor(499400852887245323683941126088449355702834653807158087 ) [ 290582744822559701357207 1] [1718618403140893608084889221841 1] Last fiddled with by paulunderwood on 20201117 at 05:50 

20201117, 09:44  #4 
Romulan Interpreter
Jun 2011
Thailand
2×3×5^{2}×61 Posts 
Adding to it, that list only contains factors which are prime and were discovered for assignments taken with GPU72 (if that's not understood).
To see a list with ever largest factors found, with the method used to find them, see mersenne.ca list. Last fiddled with by LaurV on 20201117 at 09:45 Reason: s/lost/list/ geez man, fatty fingers! 
20201117, 14:35  #5 
Mar 2019
USA
2E_{16} Posts 
Thanks so much for the responses. That is what I was expecting.
Me: See really long number, longer than the other numbers, think I'm onto something... Reality: Nah. Not really. 
20201124, 15:28  #6 
Feb 2008
Bray, Ireland
2×3×19 Posts 
Wow, those bit levels are way higher than anything that can be (reasonably) done on TF. Those top factors are all from P1?
Last fiddled with by ZFR on 20201124 at 15:28 
20201124, 19:18  #7 
If I May
"Chris Halsall"
Sep 2002
Barbados
9402_{10} Posts 

20201124, 20:21  #8 
Feb 2008
Bray, Ireland
162_{8} Posts 
And unlike TF, P1 is better done on CPU than GPU, right?
So if I want to devote one of my CPU workers to P1 instead of PRPs, I can just get a list from GPU72, copy it under that worker in mprime's worktodo, and that's it? B1 and B2 will be chosen automatically by mprime? 
20201124, 20:29  #9 
If I May
"Chris Halsall"
Sep 2002
Barbados
10010010111010_{2} Posts 
There's some excellent GPU P1 software available now. But Prime95/mprime (CPU) is by far the easiest to work with.
Contemporaneous P1 work is available from both Primenet and GPU72. Know that GPU72 is currently working at higher ranges (105M) than Primenet (101M) for P1 assignments. And so the work takes slightly more compute (and, thus, time). Last fiddled with by chalsall on 20201124 at 20:30 Reason: s/Contemerious/Contemporaneous/; # Smelling mistake. 
20201124, 21:07  #10 
Feb 2008
Bray, Ireland
114_{10} Posts 
Thanks. Going to grab some from GPU72 when the next PRP finishes next week. Let's see if I can get my name on that top 100 page.

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Largest k*2^n1 Primes Found In 2019  Thomas11  Riesel Prime Search  2  20200101 05:32 
Largest k*2^n1 Primes Found In 2015  Kosmaj  Riesel Prime Search  0  20160101 13:45 
Largest k*2^n1 Primes Found in 2013  Kosmaj  Riesel Prime Search  3  20141212 07:14 
formula for largest prime found  debasish  Miscellaneous Math  20  20070928 03:48 
Largest prime found yet by 15k search  TTn  15k Search  1  20040511 03:04 