mersenneforum.org > Data Nearly all Factors up to 2^71 found between 2.86 G and 2.96 G
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 2019-10-01, 15:21 #1 Kalli Hofmann     "Karl-Heinz Hofmann" Jan 2017 Gr.-Rohrheim Germany 33 Posts Nearly all Factors up to 2^71 found between 2.86 G and 2.96 G 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 Attached Thumbnails
2019-10-01, 16:58   #2

"Sam Laur"
Dec 2018
Turku, Finland

2×3×5×11 Posts

Quote:
 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

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...

 2019-10-01, 17:46 #3 Kalli Hofmann     "Karl-Heinz Hofmann" Jan 2017 Gr.-Rohrheim Germany 1B16 Posts Hello Nomead 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 :-)
 2019-10-02, 09:07 #4 nomead     "Sam Laur" Dec 2018 Turku, Finland 2·3·5·11 Posts 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.
 2019-10-02, 10:29 #5 LaurV Romulan Interpreter     Jun 2011 Thailand 25×5×59 Posts 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
 2019-10-02, 15:31 #6 Batalov     "Serge" Mar 2008 Phi(4,2^7658614+1)/2 23·11·107 Posts I moved this thread to where it will be noticed by relevant group
 2019-11-05, 11:52 #7 Kalli Hofmann     "Karl-Heinz Hofmann" Jan 2017 Gr.-Rohrheim Germany 33 Posts Finished 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
2019-11-05, 14:11   #8
James Heinrich

"James Heinrich"
May 2004
ex-Northern Ontario

335610 Posts

Quote:
 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.

2019-11-05, 14:34   #9
ramgeis

Apr 2013

1658 Posts

Quote:
 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.

2019-11-05, 17:51   #10
hansl

Apr 2019

5×41 Posts

Quote:
 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.

 2019-11-06, 08:45 #11 Kalli Hofmann     "Karl-Heinz Hofmann" Jan 2017 Gr.-Rohrheim Germany 1B16 Posts @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 Last fiddled with by Kalli Hofmann on 2019-11-06 at 08:53

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