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 2022-04-20, 20:09 #100 mart_r     Dec 2008 you know...around... 35516 Posts The WR gaps so far have all been fully checked, consequently this gap should also be fully checked IMHO. My pocket calculator says for 36375 tests it would take me about 82 days for a full check on my Win8-PC. Depending on the progress, later I can also allocate some more resources (two more cores on my newest laptop which is a bit faster than the PC). I haven't tried -a1 in OpenPFGW yet. But for a start it would be good if you could just provide the list of values -3531714 < x < 3654858 for which 29*479909#/19#+x has to be checked (either here or via PM). I would then pick a range, x < -2000000 say, and start testing. Last fiddled with by mart_r on 2022-04-20 at 20:11 Reason: too many "s"
 2022-04-20, 21:18 #101 kruoli     "Oliver" Sep 2017 Porta Westfalica, DE 22×32×37 Posts If open for anyone, I would like to help with testing x > 3e6.
2022-04-21, 02:09   #102
robert44444uk

Jun 2003
Suva, Fiji

23·3·5·17 Posts

Quote:
 Originally Posted by MJansen I would be willing to do that, I will run the remaining candidates on 12 cores if you can let me know how far each of the 4 files has progressed. Send me a PM for the details. Kind regards Michiel
Michiel, I sent the candidate to you in an email

2022-04-21, 05:47   #103
MJansen

Jan 2018

2×5×11 Posts

Quote:
 Originally Posted by mart_r The WR gaps so far have all been fully checked, consequently this gap should also be fully checked IMHO. My pocket calculator says for 36375 tests it would take me about 82 days for a full check on my Win8-PC. Depending on the progress, later I can also allocate some more resources (two more cores on my newest laptop which is a bit faster than the PC). I haven't tried -a1 in OpenPFGW yet. But for a start it would be good if you could just provide the list of values -3531714 < x < 3654858 for which 29*479909#/19#+x has to be checked (either here or via PM). I would then pick a range, x < -2000000 say, and start testing.
Thanks Mart!
and also thanks in advance to Kruoli!

Regarding logging: using the minus L option: -lyourlogfilenamehere.txt command in the command line, will log all output into a textfile in the directory where the pfgw64 executable file is. I am not sure what -a1 does, I remember Jens asked me to use that in 2013. Logging will do the trick just fine!

Attached you will find the list of candidates after sieving till 10^12. In 2 files, on for the plus side and another for the minus side. It has all candidates in a range 29*Prime(40.000)#/9699690 +/- 50*Prime(40.000). Just delete the extra values outside the range -3531714 < x < 3654858. The first 3 rows look like:
29
9699690
479909

Those are the multiplier (29), the divider (9699690) and the primorial of Prime(40.000) = 479909#
From the 4th line onwards you will find the remaining candidates on the minus or plus side, each side has a separate file.

Note: The 62.5 days was based on around 10 minutes per PRP on my machine. Taking 13 minutes per PRP on yours would indeed take 18 extra days... There should be a smarter way ...

Kind regards
Michiel
Attached Files
 TestP40000D9699690M29.zip (1.70 MB, 28 views)

Last fiddled with by MJansen on 2022-04-21 at 06:14 Reason: explained the attached files

 2022-04-21, 16:27 #104 kruoli     "Oliver" Sep 2017 Porta Westfalica, DE 101001101002 Posts Hm, PFGW 4.0.1 sees my CPU as having only (up to) SSE4.2, while it has AVX512. Is this the wrong version? I took it from SourceForge. I changed the file header to ABC 29*479909#/9699690+$a because I did not see which format your file is in. Last fiddled with by kruoli on 2022-04-21 at 16:55 Reason: Fixed formula.  2022-04-21, 17:04 #105 mart_r Dec 2008 you know...around... 11010101012 Posts OK, like I said I'll start testing 29*479909#/19#+x with -3531714 < x <= -2000000. I won't test those -23995430 <= x < -3531714, that would take way too long 2022-04-21, 21:31 #106 MJansen Jan 2018 11010 Posts Quote:  Originally Posted by kruoli Hm, PFGW 4.0.1 sees my CPU as having only (up to) SSE4.2, while it has AVX512. Is this the wrong version? I took it from SourceForge. I changed the file header to ABC 29*479909#/9699690+$a because I did not see which format your file is in.

Hi it is a custom made flat text file, they are a direct output from Jens's Treesieve program. Change them any way you like, ABC seems easy enough.

Thanks again for helping out!

Kind regards
Michiel

2022-04-21, 21:39   #107
MJansen

Jan 2018

11010 Posts

Quote:
 Originally Posted by robert44444uk Michiel, I sent the candidate to you in an email
Thnx, recieved them in good order and the gapsearch has continued just now, keep you posted!

Kind regards
Michiel

2022-04-21, 21:42   #108
MJansen

Jan 2018

6E16 Posts

Quote:
 Originally Posted by mart_r OK, like I said I'll start testing 29*479909#/19#+x with -3531714 < x <= -2000000. I won't test those -23995430 <= x < -3531714, that would take way too long
Lol, good thing you did not start the second part ;-)

 2022-04-28, 07:13 #109 SethTro     "Seth" Apr 2019 7378 Posts primecert v2 Michiel had some excellent suggestions about updating the "primecert" column to more than "C" - certified "P" - probabilistic "?" - unverified In short they suggest adding, P (proven), D (Double checked), T (Trusted submitter) with upper and lower casing to indicate if it's the endpoints (lowercase) or internals (uppercase) that have been proven / verified / taken on trust. I've added a new page modern-format to the wiki to formalize this change. Michiel will propose the new text for P/D/T and everyone else is welcome to suggest other changes. Hope everyone is well and enjoying the spring; My tulips have just bloomed!
2022-04-29, 19:04   #110
kruoli

"Oliver"
Sep 2017
Porta Westfalica, DE

22×32×37 Posts

Quote:
 Originally Posted by kruoli If open for anyone, I would like to help with testing x > 3e6.
This is finished. See the attached file.
Attached Files
 results.7z (91.5 KB, 39 views)

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