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Old 2012-08-04, 23:46   #166
Batalov
 
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I GESS IT IS PRIME!!
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Old 2012-08-05, 01:42   #167
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Best wishes to NFS@Home for a remarkable achievement!
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Old 2012-08-05, 02:13   #168
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Quote:
Originally Posted by frmky View Post
I've never been searching for primes full time.

M1019 is sieving now. Perhaps M1037 will be next, or 12,289+ or 5,446+.
Of course, it is always good to clear Mersenne numbers. The other two
are C265 and C274? Both undertested at 2t55; looks like 289p is overdue
for more testing as a fifth hole, 446p is further out but larger.

A very nice p143 for pentultimate factor, needs a C286 to have a
chance; that's out there! -Bruce
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Old 2012-08-05, 06:18   #169
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Congratulations!!
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Old 2012-08-05, 06:21   #170
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Yeah, congratulations for setting this record
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Old 2012-08-05, 07:36   #171
xilman
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Quote:
Originally Posted by bdodson View Post
Of course, it is always good to clear Mersenne numbers. The other two
are C265 and C274? Both undertested at 2t55; looks like 289p is overdue
for more testing as a fifth hole, 446p is further out but larger.

A very nice p143 for pentultimate factor, needs a C286 to have a
chance; that's out there! -Bruce
C285 surely?
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Old 2012-08-05, 07:49   #172
Batalov
 
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If one wants to beat the p143 above, one needs a c > 0.219*10^286, a c286. There's always the second prize, though (a set of steak knives!). The third prize is...

(NSFW, obviously)

Last fiddled with by Batalov on 2012-08-11 at 17:53 Reason: (previous link was shut down)
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Old 2012-08-05, 10:24   #173
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Code:
p143-1 = 2^4*3*13*29*1061*1717297*5879064877797191*2130134834354231*p99
p143+1 = 2*71*229*307*180073*1695653*802019957507*60854868590560169873679751115717379719685541*p69
p177-1 = 2*3^2*1061*749005237*495208476776963*2141325263036607091*662644764100955663*775773368635591611966240530501981*p80 
p177+1 = 2^4*267493*140551319*4927926989*342953555423061833*p135
Far out of reach for P+-1, unsurprisingly.

Grats to NFS@home for this nice factorization!
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Old 2012-08-11, 11:10   #174
fivemack
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For what it's worth:

Code:
$ wc -l M929.s/snfs.lasieve-1.* | tail -n1
  2994787 total
Should be done by Christmas
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Old 2012-10-12, 21:26   #175
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2,1019- is now finished. It factors as
Code:
prp76 factor: 1140356877758679056056869944845540826402854641895928218298013381554156431441
prp171 factor: 388681245434555178040304037498388111255149718948082513123081412986356790468105286823145968792673325167362315988082015725832111525046899514339119511003116426129870872549431
The LA on the ~57.6M matrix (~25 GB) took about 170 hours on 576 cores of the Lonestar cluster. That's a bit over a CPU-decade. The log is attached.
Attached Files
File Type: zip 2m1019.zip (6.0 KB, 67 views)

Last fiddled with by frmky on 2012-10-12 at 21:28
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Old 2012-10-12, 21:31   #176
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Congratulations!
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