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

jyb 2016-10-31 18:45

Reserving C183_125_113 (14e).

jyb 2016-10-31 18:59

[QUOTE=fivemack;445897]Taking P223 (284688...)+1(14e).

This is going to be a big job; 26.40M matrix, which is much larger than you'd expect for a sextic SNFS number with log(N)~229.87.

[B]Ah, the polynomial p^31+p-2 is (p-1) (polcyclo(31)(p)+1)[/B][/QUOTE]

I had hoped that some extra sieving I scheduled right before you reserved this might help build a smaller matrix. Were you able to take advantage of that sieving, or did you download the relations before it completed?

As for your last comment (in bold): That's true of course; does that somehow explain to you why this is such a hard job? I confess it doesn't help me in that regard.

pinhodecarlos 2016-11-01 10:13

[QUOTE=jyb;446073]I had hoped that some extra sieving I scheduled right before you reserved this might help build a smaller matrix. Were you able to take advantage of that sieving, or did you download the relations before it completed?
[/QUOTE]

I don't think Tom did since when I tried to run it I also got a 26.4M matrix and this was previous to your extra sieving added.

[CODE]
Fri Oct 28 07:11:03 2016 building initial matrix
Fri Oct 28 07:31:39 2016 memory use: 10885.5 MB
Fri Oct 28 07:33:50 2016 read 26405119 cycles
Fri Oct 28 07:33:58 2016 matrix is 26404942 x 26405119 (11527.5 MB) with weight 3281681676 (124.28/col)
Fri Oct 28 07:33:58 2016 sparse part has weight 2731413300 (103.44/col)
Fri Oct 28 07:40:53 2016 filtering completed in 2 passes
Fri Oct 28 07:41:01 2016 matrix is 26404346 x 26404523 (11527.5 MB) with weight 3281663634 (124.28/col)
Fri Oct 28 07:41:01 2016 sparse part has weight 2731407673 (103.44/col)
Fri Oct 28 07:51:37 2016 matrix starts at (0, 0)
Fri Oct 28 07:51:45 2016 matrix is 26404346 x 26404523 (11527.5 MB) with weight 3281663634 (124.28/col)
Fri Oct 28 07:51:45 2016 sparse part has weight 2731407673 (103.44/col)
Fri Oct 28 07:51:45 2016 saving the first 48 matrix rows for later
Fri Oct 28 07:51:53 2016 matrix includes 64 packed rows
Fri Oct 28 07:51:58 2016 matrix is 26404298 x 26404523 (11066.4 MB) with weight 2803729370 (106.18/col)
Fri Oct 28 07:51:58 2016 sparse part has weight 2636952729 (99.87/col)
Fri Oct 28 07:51:58 2016 using block size 8192 and superblock size 589824 for processor cache size 6144 kB

[/CODE]

swellman 2016-11-01 11:28

Two factorizations completed
 
C249_125_106

[code]
p90=133088137931982124597910187870925938561512469396229290589172722460407524724889145901159267
p160=109136605258120805027588585725903082204003973202947612448629341355325923895038662906095739981979846767502389763120876436
2654672786393113201553080937837083670817
[/code]

C182_133_67

[code]
p63=828350310325884862138416725801178809050026952843944773148075259
p119=37569647636675626581513480531285161199035862063301903012665118179278130578566659168521472816359885590901928714170342653
[/code]

Results reported to fdb. I'll publish the logs this weekend once I return home.

jyb 2016-11-01 15:56

C182_143_60 (14e) factored.
 
[code]
p76 factor: 3872287501402903930228600850690473269300873978027212522995515799643109817823
p106 factor: 3063441540891169032671890357747457099441993475478604112095009799841114419752894622469062924769942981850359
[/code]

Log: [url]http://pastebin.com/GG3Dc3cg[/url]

pinhodecarlos 2016-11-01 20:46

I'll take 127^88+88^127 cofactor (15e) next.

unconnected 2016-11-02 09:14

61117_247 completed - 130 hours for 12.6M matrix (TD=132).

[CODE]prp96 factor: 324206356872396216056251332268133031332033677868941836961713928534982959069533221907439208151139
prp153 factor: 188494487587002252950118932282698914379698059284059438987616272400948136467239126853988518526701291804520902177522675757159876642822634010174633320844303
[/CODE]

[url]http://pastebin.com/GgDF4BtD[/url]

pinhodecarlos 2016-11-03 09:24

C187_138_106 (14e) factored
 
1 Attachment(s)
[CODE]
Thu Nov 3 09:21:55 2016 p69 factor: 915101455200362915264070609045375120037670830524180416733000109126241
Thu Nov 3 09:21:55 2016 p118 factor: 2388828721107896936437995631171792978606222717654014472096914778780002694008620509944496191750994620673118857585555229
[/CODE]

[url]http://pastebin.com/1Y7qR6gm[/url]

fivemack 2016-11-03 10:21

C187_138_65 done
 
1 Attachment(s)
[code]
Thu Nov 3 09:23:53 2016 p63 factor: 211237539524611952998201708054181634829676818388209966021859789
Thu Nov 3 09:23:53 2016 p124 factor: 9308309276156951913858243909976159224346870097160843876366152118483816238588742822576496028505991717464377859722422074841397
[/code]

About 63.8 hours on seven threads E5-2650v2 for an 11.97M matrix at td=128 (td=136 didn't build). Log attached and at [url]http://pastebin.com/xd9VK8zy[/url]

jyb 2016-11-04 16:24

Reserving C185_133_80 (14e).

wombatman 2016-11-04 17:16

Reserving C177_HP2_4496_300 from 15e.


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