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-   -   Linear algebra reservations, progress and results (https://www.mersenneforum.org/showthread.php?t=20023)

RichD 2015-05-12 12:06

GW_8_274 factored
 
1 Attachment(s)
as ...
[CODE]prp85 factor: 2027232411141441503348218641230694479774073728127404105632981384154255591341093291799
prp89 factor: 16946827511166162472773408218577539524951354337111245569332942876293536798063991292604491[/CODE]

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

swellman 2015-05-14 21:51

[QUOTE=swellman;401764]C223_138_124 is in LA, full factorization expected by May 15..[/QUOTE]

A nice split.

[code]
prp111 factor: 281758989195156859226343493615560601871444921002255378968506486281344648083035737627548246102709434709657551213
prp113 factor: 10063391641140329616472337990361814541974857046175968554841414076452306300833811912039203916458828938809374750313
[/code]

[QUOTE]
Then I will start on C174_139_129
[/QUOTE]

Downloading...

jyb 2015-05-18 22:02

Taking GW_10_244.

swellman 2015-05-20 15:59

C174_139_129
 
[code]
prp78 factor: 446131639056301666403605366226845346098863064186402364169543409204841042028223
prp96 factor: 484533303513319444758009248526259508315634021701197469896443299172740859005524411638641718367117
[/code]

jyb 2015-05-21 18:35

GW_10_244
 
1 Attachment(s)
[code]
prp79 factor: 1762185993486350596890982268186846407021899371992649800848597659673806545773119
prp126 factor: 113559745187513125673869271546328011662949448133534301419649041507086106736578921127497861898996159829707364587864463633790769
[/code]

wombatman 2015-05-22 13:19

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

fivemack 2015-05-25 05:43

114!+1 done
 
1 Attachment(s)
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 [url]http://www.mersenneforum.org/showpost.php?p=400601&postcount=154[/url].

114!+1 splits as
[code]
Mon May 25 06:29:35 2015 prp92 factor: 16551825430682735572153631716903739626971854840321615784795688433449510218453345547225152041
Mon May 25 06:29:35 2015 prp96 factor: 153672460123769557067716973919225576478334928642191978522349877754277031077534469030098949505561
[/code]

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

[code]
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)
[/code]

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 2015-05-25 21:18

Taking W_811b. ETA is Thursday.

fivemack 2015-05-26 08:58

GW_10_247 done
 
1 Attachment(s)
[code]
Sat May 23 01:53:37 2015 prp83 factor: 83482461959329538003955621321659049255682524808196451331706255492406697998115240421
Sat May 23 01:53:37 2015 prp163 factor: 1708358027705720124161874792300020555563841901829497702340466682637007721786532550499628573312101324574311122435004444219128907596811076220732013065976095157541301
[/code]

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 2015-05-26 09:40

Taking GW_11_236

wombatman 2015-05-28 02:21

The C178 of HP2(4496) splits as:
[CODE]prp63 factor: 378935629244324792159461397853284620145145361475393600336575871
prp115 factor: 7061482310884605174936680159787155262399200345947414556500089094954257475115463746579759346762240316098987825233143[/CODE]

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


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