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-   -   RPS 11th Drive: Search for more megabit primes (https://www.mersenneforum.org/showthread.php?t=16011)

Thomas11 2011-09-13 17:14

I just noticed that [B]k=2039[/B] has already been tested by James P. Burt up to n=1M. He reported the prime [B]2039*2^841312-1[/B] in 2008.
So we will remove this k from the drive.

Kosmaj will replace the input files on the server as soon as possible...

BTW.: We'll keep the other k=2029 for which pb386 just hit an already known prime (2029*2^673583-1) in the drive, since we do not know how far it was tested.

Kosmaj 2011-09-14 02:47

11th Drive test files updated as Thomas said, by removing k=2039.

The following drives are now all updated using latest Psieve files of July 31, or later.
1st Megabit
2nd Megabit
k=5
k=15

Sieving depths (Thomas, please confirm):
p=100P (=1e17) for all n<3M,
about p=30P (=3e16) for n>3M, in our case k=5

pb386 2011-09-14 08:04

708-712 complete - 3 primes
taking 714-718

Thomas11 2011-09-14 08:10

[QUOTE=Kosmaj;271686]
Sieving depths (Thomas, please confirm):
p=100P (=1e17) for all n<3M,
about p=30P (=3e16) for n>3M, in our case k=5[/QUOTE]

Yes, these are the current sieving depths.

Thomas11 2011-09-14 08:13

[QUOTE=Thomas11;271628]BTW.: We'll keep the other k=2029 for which pb386 just hit an already known prime (2029*2^673583-1) in the drive, since we do not know how far it was tested.[/QUOTE]

I got a reply from justinsane, the finder of 2029*2^673583-1, stating that he can't tell anymore, how far this k was tested.

So, we'll keep it in the drive...

Thomas11 2011-09-16 08:52

712-714 complete, no primes.

Taking 718-720.

pb386 2011-09-19 08:12

714-718 complete - 1 prime
taking 720-724

pb386 2011-09-21 07:59

720-724 complete - no primes
taking 724-728

Thomas11 2011-09-22 10:59

718-720 complete (1 prime).

Taking 728-730.

pb386 2011-09-26 08:10

724-728 complete - 5 primes
taking 730-734

Thomas11 2011-09-26 09:00

728-730 complete, 1 prime.
Taking 734-736.


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