GPU72 Largest 100 Factors Found

[LOBES]

I was clicking around the site and found the "Largest 100 Factors Found" page interesting:


https://www.gpu72.com/reports/largest_factors/


Is that up-to-date? 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.

[chalsall]

Originally Posted by LOBES

I was clicking around the site and found the "Largest 100 Factors Found" page interesting:

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.

That list is automatically updated. And while your find is impressive, it is, unfortunately, a "composite factor".

BTW, it's a complete fluke that I'm at the top of the list. There are many others putting in far more P-1 efforts than myself; I just got lucky there.

[paulunderwood]

Originally Posted by LOBES

I was clicking around the site and found the "Largest 100 Factors Found" page interesting:


https://www.gpu72.com/reports/largest_factors/


Is that up-to-date? 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.

Congrats! However:

? factor(499400852887245323683941126088449355702834653807158087 )

[       290582744822559701357207 1]

[1718618403140893608084889221841 1]

[LaurV]

Adding to it, that list only contains factors which are prime and were discovered for assignments taken with GPU-72 (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.

[LOBES]

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.

[ZFR]

Wow, those bit levels are way higher than anything that can be (reasonably) done on TF. Those top factors are all from P-1?

[chalsall]

Originally Posted by ZFR

Those top factors are all from P-1?

Yes.

[ZFR]

Originally Posted by chalsall

Yes.

And unlike TF, P-1 is better done on CPU than GPU, right?

So if I want to devote one of my CPU workers to P-1 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?

[chalsall]

Originally Posted by ZFR

And unlike TF, P-1 is better done on CPU than GPU, right?

There's some excellent GPU P-1 software available now. But Prime95/mprime (CPU) is by far the easiest to work with.

Originally Posted by ZFR

So if I want to devote one of my CPU workers to P-1 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?

Contemporaneous P-1 work is available from both Primenet and GPU72. Know that GPU72 is currently working at higher ranges (105M) than Primenet (101M) for P-1 assignments. And so the work takes slightly more compute (and, thus, time).

[ZFR]

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.