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Old 2019-10-01, 15:21   #1
Kalli Hofmann
 
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"Karl-Heinz Hofmann"
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Default Nearly all Factors up to 2^69 found between 2.9G and 2.95G

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
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Old 2019-10-01, 16:58   #2
nomead
 
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Quote:
Originally Posted by Kalli Hofmann View Post
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...
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Old 2019-10-01, 17:46   #3
Kalli Hofmann
 
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Smile 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 :-)
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Old 2019-10-02, 09:07   #4
nomead
 
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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.
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Old 2019-10-02, 10:29   #5
LaurV
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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
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Old 2019-10-02, 15:31   #6
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I moved this thread to where it will be noticed by relevant group
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Old 2019-11-05, 11:52   #7
Kalli Hofmann
 
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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
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Old 2019-11-05, 14:11   #8
James Heinrich
 
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Quote:
Originally Posted by Kalli Hofmann View Post
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.
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Old 2019-11-05, 14:34   #9
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Quote:
Originally Posted by Kalli Hofmann View Post
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.
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Old 2019-11-05, 17:51   #10
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Quote:
Originally Posted by James Heinrich View Post
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.
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Old 2019-11-06, 08:45   #11
Kalli Hofmann
 
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@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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