mersenneforum.org - Bases 501-1030 reservations/statuses/primes

I'll reserve this to n=200000.

Although sieved to 2e12, it didn't appear to be sieved deeply enough as there were over 1500 candidates left. I restarted sieving, but didn't find any factors after a while, which I thought was odd. I thought that maybe the depth was incorrect, so out of curiosity, I restarted the entire range. I discovered that the whomever sieved originally must have used either newpgen or a buggy version of srsieve/sr2sieve because I'm finding factors of n for p<2e12 that were missed previously. Fortunately it should take about two days to get back to 2e12. I can then evaluate to determine if I need to sieve deeper. I'll provide more information once it gets to 2e12.

gd_barnes

2011-12-13 09:00

[QUOTE=rogue;281997]I'll reserve this to n=200000.

Although sieved to 2e12, it didn't appear to be sieved deeply enough as there were over 1500 candidates left. I restarted sieving, but didn't find any factors after a while, which I thought was odd. I thought that maybe the depth was incorrect, so out of curiosity, I restarted the entire range. I discovered that the whomever sieved originally must have used either newpgen or a buggy version of srsieve/sr2sieve because I'm finding factors of n for p<2e12 that were missed previously. Fortunately it should take about two days to get back to 2e12. I can then evaluate to determine if I need to sieve deeper. I'll provide more information once it gets to 2e12.[/QUOTE]

Hum. That is odd. I'm glad you started over. I'll just remove the file from the page.

MyDogBuster

2011-12-15 04:37

S805

S805 tested n=25K-50K

430*805^25396+1 is prime

Results emailed - Base Released

S805 is now a 2ker

MyDogBuster

2011-12-17 19:59

S811

S811 tested n=25K-50K

358*811^32640+1 is prime

Results emailed - Base released

S811 is now a 4ker

MyDogBuster

2011-12-19 00:14

S825

S825 tested n=25K-50K - Nothing found

Results emailed - Base released