Linear algebra reservations, progress and results

[RichD]

as ...

prp85 factor: 2027232411141441503348218641230694479774073728127404105632981384154255591341093291799
prp89 factor: 16946827511166162472773408218577539524951354337111245569332942876293536798063991292604491

72 hours to solve a 9.9M matrix with TD=120 on a Core-i5 -t 4.

[swellman]

Originally Posted by swellman

C223_138_124 is in LA, full factorization expected by May 15..

A nice split.

prp111 factor: 281758989195156859226343493615560601871444921002255378968506486281344648083035737627548246102709434709657551213
prp113 factor: 10063391641140329616472337990361814541974857046175968554841414076452306300833811912039203916458828938809374750313

Then I will start on C174_139_129

Downloading...

[jyb]

Taking GW_10_244.

[swellman]

prp78 factor: 446131639056301666403605366226845346098863064186402364169543409204841042028223
prp96 factor: 484533303513319444758009248526259508315634021701197469896443299172740859005524411638641718367117

[jyb]

prp79 factor: 1762185993486350596890982268186846407021899371992649800848597659673806545773119
prp126 factor: 113559745187513125673869271546328011662949448133534301419649041507086106736578921127497861898996159829707364587864463633790769

[wombatman]

The C178 composite from HP2(4496) is started. ETA of just over 128 hours at TD=120.

[fivemack]

A problem with relatively large computations is that, by the end of the the job, you can't find the posts from when you started, particularly since 114! is not a term you can search the forum with. The starting post turns out to have been http://www.mersenneforum.org/showpos...&postcount=154.

114!+1 splits as

Mon May 25 06:29:35 2015  prp92 factor: 16551825430682735572153631716903739626971854840321615784795688433449510218453345547225152041
Mon May 25 06:29:35 2015  prp96 factor: 153672460123769557067716973919225576478334928642191978522349877754277031077534469030098949505561

Linear algebra took 666 real-time hours over four cores of i7/4770K, running a matrix with the following statistics:

Tue Apr 21 23:11:31 2015  matrix is 26163552 x 26163730 (12431.8 MB) with weight 3810006646 (145.62/col)
Tue Apr 21 23:11:31 2015  sparse part has weight 2944957900 (112.56/col)
Tue Apr 21 23:15:50 2015  filtering completed in 2 passes
Tue Apr 21 23:15:55 2015  matrix is 26163295 x 26163473 (12431.8 MB) with weight 3809995390 (145.62/col)
Tue Apr 21 23:15:55 2015  sparse part has weight 2944955874 (112.56/col)
Tue Apr 21 23:18:30 2015  matrix starts at (0, 0)
Tue Apr 21 23:18:34 2015  matrix is 26163295 x 26163473 (12431.8 MB) with weight 3809995390 (145.62/col)
Tue Apr 21 23:18:34 2015  sparse part has weight 2944955874 (112.56/col)
Tue Apr 21 23:18:34 2015  saving the first 48 matrix rows for later
Tue Apr 21 23:18:38 2015  matrix includes 64 packed rows
Tue Apr 21 23:18:40 2015  matrix is 26163247 x 26163473 (12170.6 MB) with weight 3271494290 (125.04/col)
Tue Apr 21 23:18:40 2015  sparse part has weight 2928816169 (111.94/col)

The sieving took longer than it should have done because, due to an oversight when I set up the polynomial on nfs@home, it was run on the lower-yield rational side.

[jyb]

Taking W_811b. ETA is Thursday.

[fivemack]

Sat May 23 01:53:37 2015  prp83 factor: 83482461959329538003955621321659049255682524808196451331706255492406697998115240421
Sat May 23 01:53:37 2015  prp163 factor: 1708358027705720124161874792300020555563841901829497702340466682637007721786532550499628573312101324574311122435004444219128907596811076220732013065976095157541301

Log attached; 273 hours on three threads of an often-otherwise-quite-busy i7/2600 for a 12.7M matrix made with density 120.

[fivemack]

Taking GW_11_236

[wombatman]

The C178 of HP2(4496) splits as:

prp63 factor: 378935629244324792159461397853284620145145361475393600336575871
prp115 factor: 7061482310884605174936680159787155262399200345947414556500089094954257475115463746579759346762240316098987825233143

TD=120, Matrix = 14.53M, time ~ 128 hours (lost power during this, so don't have an exact time)