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-   -   Report top-5000 primes for all k<=1001 (https://www.mersenneforum.org/showthread.php?t=9891)

mdettweiler 2016-08-11 02:49

[url=http://primes.utm.edu/primes/page.php?id=122013]993*2^1437131-1[/url] is prime! (port 2000/14th drive)

mdettweiler 2016-09-01 06:34

[url=http://primes.utm.edu/primes/page.php?id=122124]951*2^1438430-1[/url] is prime! (port 2000/14th drive)

mdettweiler 2016-09-06 04:23

[url=http://primes.utm.edu/primes/page.php?id=122166]685*2^1438521-1[/url] is prime! (port 2000/14th drive)

mdettweiler 2016-09-28 12:18

[url=http://primes.utm.edu/primes/page.php?id=122258]741*2^1441006-1[/url] is prime! (port 2000/14th drive)

Mini-Geek 2016-11-01 03:02

[URL="http://primes.utm.edu/primes/page.php?id=122454"]499*2^1434643-1[/URL] is prime!

mdettweiler 2016-11-29 06:18

Two primes from port 2000:

[url=http://primes.utm.edu/primes/page.php?id=122544]623*2^1445836-1[/url]
[url=http://primes.utm.edu/primes/page.php?id=122545]685*2^1446421-1[/url]

gd_barnes 2016-12-05 03:41

Henry,

You either found two real fast primes close together or you have another bad machine producing erroneous primes. Can you check on that?


Thanks,
Gary

henryzz 2016-12-05 17:12

[QUOTE=gd_barnes;448411]Henry,

You either found two real fast primes close together or you have another bad machine producing erroneous primes. Can you check on that?


Thanks,
Gary[/QUOTE]

Checking the primes. It is the same machine. I was certain that it was fixed after a bios update. Either I have been lucky or that isn't the case.
When I double checked the work on my own server(about a weeks work ~1000 tests) there were two mismatches(both wrong the first time before the bios update). Even then it was fairly stable.
I was watching amazon prime yesterday evening. It is possible that this is related to hardware decoding at the same time. Not certain that the times match up completely.

I might have to just keep this machine off public servers as the problem seems to be false primes.

Both "primes" tested composite with a prp test. This is getting frustrating. What sort of testing do I need to do to confirm that this pc is stable? The errors are so infrequent.

pepi37 2016-12-05 18:12

[QUOTE=henryzz;448474]Checking the primes. It is the same machine. I was certain that it was fixed after a bios update. Either I have been lucky or that isn't the case.
When I double checked the work on my own server(about a weeks work ~1000 tests) there were two mismatches(both wrong the first time before the bios update). Even then it was fairly stable.
I was watching amazon prime yesterday evening. It is possible that this is related to hardware decoding at the same time. Not certain that the times match up completely.

I might have to just keep this machine off public servers as the problem seems to be false primes.

Both "primes" tested composite with a prp test. This is getting frustrating. What sort of testing do I need to do to confirm that this pc is stable? The errors are so infrequent.[/QUOTE]
What is that two "primes"? ( if I may know)?

pinhodecarlos 2016-12-05 19:57

[QUOTE=pepi37;448483]What is that two "primes"? ( if I may know)?[/QUOTE]

I suppose these two:

1000000000:M:1:2:258
529 1440053
429 1440063

from

[URL]http://www.noprimeleftbehind.net/stats/index.php?content=port[/URL]

edit:
529*2^1440053-1 is not prime. LLR Res64: 3036F257192A31EA Time : 785.791 sec.
429*2^1440063-1 is not prime. LLR Res64: FF7F05B3A32F301C Time : 781.643 sec.

gd_barnes 2016-12-05 20:46

Yes those are the two "prime" composites that were reported to me.

Henry, would it be possible for you to post a list of tests done by that machine since the last time that you had the problem? We will attempt to delete the k/n pairs from the server and re-add them so that they can be retested. Thanks.


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