RPS 11th Drive: Search for more megabit primes - Page 2

Thomas11 · 2011-09-13, 17:14

I just noticed that k=2039 has already been tested by James P. Burt up to n=1M. He reported the prime 2039*2^841312-1 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:

Originally Posted by Kosmaj

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

Yes, these are the current sieving depths.

Thomas11 · 2011-09-14, 08:13

Quote:

Originally Posted by Thomas11

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.

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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2011-09-13, 17:14	#12
Thomas11 Feb 2003 2⁷×3×5 Posts	I just noticed that k=2039 has already been tested by James P. Burt up to n=1M. He reported the prime *20392^841312-1** 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.

2011-09-14, 02:47	#13
Kosmaj Nov 2003 E26₁₆ Posts	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

2011-09-14, 08:04	#14
pb386 Nov 2003 518₁₆ Posts	708-712 complete - 3 primes taking 714-718

2011-09-16, 08:52	#17
Thomas11 Feb 2003 3600₈ Posts	712-714 complete, no primes. Taking 718-720.

2011-09-19, 08:12	#18
pb386 Nov 2003 2³×163 Posts	714-718 complete - 1 prime taking 720-724

2011-09-21, 07:59	#19
pb386 Nov 2003 2³·163 Posts	720-724 complete - no primes taking 724-728

2011-09-22, 10:59	#20
Thomas11 Feb 2003 2⁷×3×5 Posts	718-720 complete (1 prime). Taking 728-730.

2011-09-26, 08:10	#21
pb386 Nov 2003 518₁₆ Posts	724-728 complete - 5 primes taking 730-734

2011-09-26, 09:00	#22
Thomas11 Feb 2003 2⁷×3×5 Posts	728-730 complete, 1 prime. Taking 734-736.