Nearly all Factors up to 2^69 found between 2.9G and 2.95G

[Kalli Hofmann]

Only a few days left to complete my search up to 2^69 between 2900 M and 2950 M.
My Question is: Who is the person, which is searching between 2800 M and 2900 and above 2950. Gruß Kalli Hofmann

[nomead]

Originally Posted by Kalli Hofmann

Only a few days left to complete my search up to 2^69 between 2900 M and 2950 M.
My Question is: Who is the person, which is searching between 2800 M and 2900 and above 2950. Gruß Kalli Hofmann

Ah, finally. I asked about this in the mersenne.ca thread earlier. And I had been wondering, who was doing things between 2900 to 2950 and up to what bit length.

So, after hansl factored everything up to 2^55 for exponents up to 10G, I started looking at the range 55-64. I started at 2800M and have finished up to 3160M now.

To avoid duplication of work, it would be nice to let people know what you're doing, especially James Heinrich...

[Kalli Hofmann]

Nice to hear from you. First I want to finish my work, before I submit this to James. I run a GTX 1070 on a I7 and a GTX 1060 on a I5. The 1070 needs about 5.1 seconds/M for 2^67 to 2^69 and the 1060 needs 6.5 seconds/M for 2^67 to 2^69. I have done the work up to 2^67 earlier (January - June), since the Level for unfactored M´s rised from 67 to 69. Let me know if we can do something else together for the community. (I´m enviously on your RTX 2080) sydämelliset terveiset Kalli :-)

[nomead]

Well... it seems that I duplicated some work, but it's not a big deal. However, I found this. You may have missed a factor of M2920306283, the latter one, 141743326582075753 with 56.976 bits.

[LaurV]

I changed the thread title to reflect what you are doing.

29,00M is confuse, I was always thinking you are looking for factors in 29M and didn't know why you only go to 69 bits

[Batalov]

I moved this thread to where it will be noticed by relevant group

[Kalli Hofmann]

I have finished the Mission. All factored and non factored M´s are done up to 2^69. between 2,90 G and 2,95 G. Does anyone knows, who has done the work between 2,93 G and 2,94 G from 2^69 to 2^71 ? And my question is: Are the factored M´s tested for further factors too? Greetings Kalli

[James Heinrich]

Originally Posted by Kalli Hofmann

Are the factored M´s tested for further factors too?

On a global scale, HansL has been systematically checking the entire 1G-10G range, not stopping after finding the first factor, and that has been done up to 2^57. Above that it is handled on an individual result basis: if your mfaktx result line says that the bitrange was tested completely after finding a factor then it as marked as such, otherwise it is assumed that factoring is stopped after finding the first factor.

[ramgeis]

Originally Posted by Kalli Hofmann

Does anyone knows, who has done the work between 2,93 G and 2,94 G from 2^69 to 2^71 ? And my question is: Are the factored M´s tested for further factors too?

I guess it's me. It seems I'm the only one at the moment pushing things from 69/70 to 71. The next chunk will be the one which suddenly appeared in the 2940M range.
I'm not continuing after a factor has been found but I can change that if this is desired.

[hansl]

Originally Posted by James Heinrich

On a global scale, HansL has been systematically checking the entire 1G-10G range, not stopping after finding the first factor, and that has been done up to 2^57. Above that it is handled on an individual result basis: if your mfaktx result line says that the bitrange was tested completely after finding a factor then it as marked as such, otherwise it is assumed that factoring is stopped after finding the first factor.

Just a small clarification 1G-10G has definitely been done to 2^56.
I also recently did 3G-10G to 2^57, but I temporarily stopped in the middle of processing 1G-3G to 2^57. So parts of that range are not completely done to 2^57. I don't know off the top of my head the exact ranges I covered so far, but I plan to pick it back up soon and complete the job.

[Kalli Hofmann]

@ramgeis : It's me, between 2940 M and 2950 M up to 2^69. But not from 2^69 to 2^71.
Between 2,90 G and 2,93 G (up to 2^69), I made a big Mistake. I filtered my own results in a way, that only the "not listed factors" were left. I deplore that the "no factor" results got loose.
But "no factor" results are important too, now I know.
I will do this work again.
Gruß Kalli