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-   -   Thinking out loud about getting under 20M unfactored exponents (https://www.mersenneforum.org/showthread.php?t=22476)

Zhangrc 2021-12-05 01:27

[QUOTE=chalsall;594486]OK... Since this seems to be a concern, I have brought 108.3M (actually reserved from Primenet, and those candidates not already assigned) into GPU72 to TF to 77 bits, and then P-1 (usually extremely well).[/QUOTE]
Thank you so much. Anton Repko and I have been working on it for months. so far, only 11 factors were found out of 660 trials (and several P-1 too).
I doubt whether putting P-1 in GPU72 is a good choice, since Ben Delo could do P-1 with B1=850K and B2=50M.

petrw1 2021-12-06 05:24

I'm taking P-1 of 26.4M

SethTro 2021-12-06 11:03

I finished the 6.9M range.

Version 30.8 really helped out. With new larger B2 bounds the odds of finding a factor improved from ~2% to ~4%. I re-ran a good portion of my exponents with the new bounds which is fast and yielded the remaining 8 needed factors.

axn 2021-12-06 12:00

:tu:

petrw1 2021-12-08 01:56

I completed my 200,000th assignment for this project.
 
138,900 TF for 1,471 factors: 1.06%
58,059 P1 for 1,753 factors: 3.02%
3,095 ECM for 29 factors: 0.94%

TOTAL: 3,253 factors and almost 6,070,000 GhzDays

Luminescence 2021-12-08 02:29

[QUOTE=petrw1;594702]138,900 TF for 1,471 factors: 1.06%
58,059 P1 for 1,753 factors: 3.02%
3,095 ECM for 29 factors: 0.94%

TOTAL: 3,253 factors and almost 6,070,000 GhzDays[/QUOTE]

In what kind of ranges were you doing ECM? ECM im 2xM sounds like pain to me :grin:

But damn... 6,000,000 GhzDays is quite the number. Congrats :bow wave:

petrw1 2021-12-08 04:33

[QUOTE=Luminescence;594709]In what kind of ranges were you doing ECM? ECM im 2xM sounds like pain to me :grin:

But damn... 6,000,000 GhzDays is quite the number. Congrats :bow wave:[/QUOTE]

That was early on before I understood what I was doing.
I had a couple slow PCs doing ECM in the under 10M Ranges.

Most of the GhzDays are from my 2080Ti GPU.
I does over 4,500 per day.

Thanks

Luminescence 2021-12-09 19:53

A bit of an off-topic question:

is it just me or are you guys also unable to get assignments for Pminus1=... lines?

This has been bugging me since I've started here.

kruoli 2021-12-09 21:34

The server only lets you register [C]Pfactor=[/C] lines, unfortunately. But maybe you can use this as a workaround sometimes.

petrw1 2021-12-09 21:38

[QUOTE=Luminescence;594837]A bit of an off-topic question:

is it just me or are you guys also unable to get assignments for Pminus1=... lines?

This has been bugging me since I've started here.[/QUOTE]

I do all my P1 with Pminus1,N/A,....

Luminescence 2021-12-10 05:23

[QUOTE=kruoli;594847]The server only lets you register [C]Pfactor=[/C] lines, unfortunately. But maybe you can use this as a workaround sometimes.[/QUOTE]

I used to register with Pfactor and then just rewrote the assignments with the „find and replace“ function to the correct Pminus1 line. I’ve stopped doing that since it is so tedious with three or four machines.

I wonder why you can’t use Pminus1 :confused:


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