The C149 of M1575 splits as 745832506848141808511611576240568244832258614550704416204357517716551 * 46988139879538892325015289211281843797083431443099045770269959929002737021425551

GNFS with polynomial

Code:

R0: -30104817950070729324593475027
R1: 5053580822033843
A0: 1582043507098494327107617309192676
A1: 39725247684687428138366842123
A2: -24684440038757266241210
A3: -2155369437080572429
A4: 88032011055
A5: 1417260

Small primes to 20M rational and to 25M algebraic; 29-bit large primes. Sieved 25M->48M getting 46404925 relations of which 41907595 unique.

Code:

Thu Mar 6 20:10:53 2008 matrix is 4158099 x 4158315 (1167.1 MB) with weight 3\
09840159 (74.51/col)
Thu Mar 6 20:10:53 2008 sparse part has weight 264370975 (63.58/col)

Sieving took about 1300 CPU-hours on a collection of Core2/2400 and K8/2300 cores, filtering (with -nc 1000000,1000000) was about two hours, linear algebra step about two days with four threads on a quad-core (interrupted half-way through and resumed; run such jobs with nohup, otherwise a crash of the machine running the terminal window in which you started the job). 2.5hrs per square root.

Code:

Thu Mar 6 18:48:57 2008
Thu Mar 6 18:48:57 2008
Thu Mar 6 18:48:57 2008 Msieve v. 1.33
Thu Mar 6 18:48:57 2008 random seeds: c07ba91b 42e70207
Thu Mar 6 18:48:57 2008 factoring 35045282158487636123259014292004089245227471550191132494367732831303373727594575532334779423274207863833033604171200909745257231922557618156366994601 (149 digits)
Thu Mar 6 18:48:59 2008 no P-1/P+1/ECM available, skipping
Thu Mar 6 18:48:59 2008 commencing number field sieve (149-digit input)
Thu Mar 6 18:48:59 2008 R0: -30104817950070729324593475027
Thu Mar 6 18:48:59 2008 R1: 5053580822033843
Thu Mar 6 18:48:59 2008 A0: 1582043507098494327107617309192676
Thu Mar 6 18:48:59 2008 A1: 39725247684687428138366842123
Thu Mar 6 18:48:59 2008 A2: -24684440038757266241210
Thu Mar 6 18:48:59 2008 A3: -2155369437080572429
Thu Mar 6 18:48:59 2008 A4: 88032011055
Thu Mar 6 18:48:59 2008 A5: 1417260
Thu Mar 6 18:48:59 2008 size score = 3.315952e-15, Murphy alpha = -5.040913, combined = 1.779734e-14
Thu Mar 6 18:55:02 2008 restarting with 46400759 relations
Thu Mar 6 18:55:05 2008 added 4170 free relations
Thu Mar 6 18:55:05 2008
Thu Mar 6 18:55:05 2008 commencing relation filtering
Thu Mar 6 18:55:05 2008 commencing duplicate removal, pass 1
Thu Mar 6 18:58:37 2008 error -9 reading relation 22538101
Thu Mar 6 18:58:37 2008 error -11 reading relation 22538102
Thu Mar 6 18:58:56 2008 error -11 reading relation 24547549
Thu Mar 6 18:58:56 2008 error -1 reading relation 24547550
Thu Mar 6 19:02:20 2008 found 6731638 hash collisions in 46404925 relations
Thu Mar 6 19:02:20 2008 commencing duplicate removal, pass 2
Thu Mar 6 19:03:13 2008 found 4497330 duplicates and 41907595 unique relations
Thu Mar 6 19:03:13 2008 memory use: 153.2 MB
Thu Mar 6 19:03:14 2008 ignoring smallest 78498 rational and 78116 algebraic ideals
Thu Mar 6 19:03:14 2008 filtering rational ideals above 1000000
Thu Mar 6 19:03:14 2008 filtering algebraic ideals above 1000000
Thu Mar 6 19:03:14 2008 need 266243 more relations than ideals
Thu Mar 6 19:03:14 2008 commencing singleton removal, pass 1
Thu Mar 6 19:10:39 2008 relations with 0 large ideals: 631
Thu Mar 6 19:10:39 2008 relations with 1 large ideals: 423
Thu Mar 6 19:10:39 2008 relations with 2 large ideals: 13230
Thu Mar 6 19:10:39 2008 relations with 3 large ideals: 166204
Thu Mar 6 19:10:39 2008 relations with 4 large ideals: 1103550
Thu Mar 6 19:10:39 2008 relations with 5 large ideals: 4198743
Thu Mar 6 19:10:39 2008 relations with 6 large ideals: 9348063
Thu Mar 6 19:10:39 2008 relations with 7+ large ideals: 27076751
Thu Mar 6 19:10:39 2008 41907595 relations and about 37255927 large ideals
Thu Mar 6 19:10:39 2008 commencing singleton removal, pass 2
Thu Mar 6 19:18:07 2008 found 11128703 singletons
Thu Mar 6 19:18:07 2008 current dataset: 30778892 relations and about 24784166 large ideals
Thu Mar 6 19:18:07 2008 commencing singleton removal, pass 3
Thu Mar 6 19:23:43 2008 found 2308815 singletons
Thu Mar 6 19:23:43 2008 current dataset: 28470077 relations and about 22401951 large ideals
Thu Mar 6 19:23:43 2008 commencing singleton removal, pass 4
Thu Mar 6 19:28:59 2008 found 489745 singletons
Thu Mar 6 19:28:59 2008 current dataset: 27980332 relations and about 21908511 large ideals
Thu Mar 6 19:28:59 2008 commencing singleton removal, final pass
Thu Mar 6 19:37:37 2008 memory use: 954.0 MB
Thu Mar 6 19:37:47 2008 commencing in-memory singleton removal
Thu Mar 6 19:37:54 2008 begin with 27980332 relations and 26968974 unique ideals
Thu Mar 6 19:39:18 2008 reduce to 20216944 relations and 18771328 ideals in 16 passes
Thu Mar 6 19:39:18 2008 max relations containing the same ideal: 219
Thu Mar 6 19:39:45 2008 removing 2967428 relations and 2567428 ideals in 400000 cliques
Thu Mar 6 19:39:47 2008 commencing in-memory singleton removal
Thu Mar 6 19:39:52 2008 begin with 17249516 relations and 18771328 unique ideals
Thu Mar 6 19:40:29 2008 reduce to 16974741 relations and 15922385 ideals in 9 passes
Thu Mar 6 19:40:29 2008 max relations containing the same ideal: 187
Thu Mar 6 19:40:50 2008 removing 2186299 relations and 1786299 ideals in 400000 cliques
Thu Mar 6 19:40:51 2008 commencing in-memory singleton removal
Thu Mar 6 19:40:55 2008 begin with 14788442 relations and 15922385 unique ideals
Thu Mar 6 19:41:27 2008 reduce to 14602209 relations and 13945659 ideals in 9 passes
Thu Mar 6 19:41:27 2008 max relations containing the same ideal: 171
Thu Mar 6 19:41:45 2008 removing 1893292 relations and 1502986 ideals in 390306 cliques
Thu Mar 6 19:41:46 2008 commencing in-memory singleton removal
Thu Mar 6 19:41:49 2008 begin with 12708917 relations and 13945659 unique ideals
Thu Mar 6 19:42:14 2008 reduce to 12543518 relations and 12273387 ideals in 8 passes
Thu Mar 6 19:42:14 2008 max relations containing the same ideal: 149
Thu Mar 6 19:42:30 2008 dataset has 72.5% excess relations
Thu Mar 6 19:42:31 2008 ignoring smallest 71274 rational and 70844 algebraic ideals
Thu Mar 6 19:42:31 2008 filtering rational ideals above 900000
Thu Mar 6 19:42:31 2008 filtering algebraic ideals above 900000
Thu Mar 6 19:42:31 2008 need 243117 more relations than ideals
Thu Mar 6 19:42:31 2008 commencing singleton removal, final pass
Thu Mar 6 19:45:51 2008 memory use: 426.3 MB
Thu Mar 6 19:45:55 2008 commencing in-memory singleton removal
Thu Mar 6 19:45:58 2008 begin with 12543518 relations and 12287883 unique ideals
Thu Mar 6 19:46:01 2008 reduce to 12543518 relations and 12287883 ideals in 1 passes
Thu Mar 6 19:46:01 2008 max relations containing the same ideal: 163
Thu Mar 6 19:46:18 2008 dataset has 63.2% excess relations
Thu Mar 6 19:46:19 2008 ignoring smallest 63951 rational and 63631 algebraic ideals
Thu Mar 6 19:46:19 2008 filtering rational ideals above 800000
Thu Mar 6 19:46:19 2008 filtering algebraic ideals above 800000
Thu Mar 6 19:46:19 2008 need 204508 more relations than ideals
Thu Mar 6 19:46:19 2008 commencing singleton removal, final pass
Thu Mar 6 19:49:37 2008 memory use: 432.2 MB
Thu Mar 6 19:49:43 2008 commencing in-memory singleton removal
Thu Mar 6 19:49:46 2008 begin with 12543518 relations and 12302419 unique ideals
Thu Mar 6 19:49:49 2008 reduce to 12543518 relations and 12302419 ideals in 1 passes
Thu Mar 6 19:49:49 2008 max relations containing the same ideal: 168
Thu Mar 6 19:50:04 2008 removing 146751 relations and 128456 ideals in 18295 cliques
Thu Mar 6 19:50:05 2008 commencing in-memory singleton removal
Thu Mar 6 19:50:08 2008 begin with 12396767 relations and 12302419 unique ideals
Thu Mar 6 19:50:22 2008 reduce to 12395773 relations and 12172968 ideals in 5 passes
Thu Mar 6 19:50:22 2008 max relations containing the same ideal: 166
Thu Mar 6 19:50:36 2008 removing 122071 relations and 103776 ideals in 18295 cliques
Thu Mar 6 19:50:36 2008 commencing in-memory singleton removal
Thu Mar 6 19:50:39 2008 begin with 12273702 relations and 12172968 unique ideals
Thu Mar 6 19:50:57 2008 reduce to 12272927 relations and 12068415 ideals in 6 passes
Thu Mar 6 19:50:57 2008 max relations containing the same ideal: 166
Thu Mar 6 19:51:01 2008 dataset has 30.6% excess relations
Thu Mar 6 19:51:01 2008 ignoring smallest 56543 rational and 56210 algebraic ideals
Thu Mar 6 19:51:01 2008 filtering rational ideals above 700000
Thu Mar 6 19:51:01 2008 filtering algebraic ideals above 700000
Thu Mar 6 19:51:01 2008 need 169143 more relations than ideals
Thu Mar 6 19:51:01 2008 commencing singleton removal, final pass
Thu Mar 6 19:54:19 2008 memory use: 429.1 MB
Thu Mar 6 19:54:24 2008 commencing in-memory singleton removal
Thu Mar 6 19:54:27 2008 begin with 12272927 relations and 12083244 unique ideals
Thu Mar 6 19:54:30 2008 reduce to 12272927 relations and 12083244 ideals in 1 passes
Thu Mar 6 19:54:30 2008 max relations containing the same ideal: 186
Thu Mar 6 19:54:45 2008 removing 66659 relations and 56389 ideals in 10270 cliques
Thu Mar 6 19:54:45 2008 commencing in-memory singleton removal
Thu Mar 6 19:54:49 2008 begin with 12206268 relations and 12083244 unique ideals
Thu Mar 6 19:55:00 2008 reduce to 12206046 relations and 12026633 ideals in 4 passes
Thu Mar 6 19:55:00 2008 max relations containing the same ideal: 186
Thu Mar 6 19:55:14 2008 removing 62981 relations and 52712 ideals in 10269 cliques
Thu Mar 6 19:55:14 2008 commencing in-memory singleton removal
Thu Mar 6 19:55:17 2008 begin with 12143065 relations and 12026633 unique ideals
Thu Mar 6 19:55:29 2008 reduce to 12142833 relations and 11973687 ideals in 4 passes
Thu Mar 6 19:55:29 2008 max relations containing the same ideal: 184
Thu Mar 6 19:55:33 2008 dataset has 8.0% excess relations
Thu Mar 6 19:55:39 2008 relations with 0 large ideals: 470
Thu Mar 6 19:55:39 2008 relations with 1 large ideals: 137
Thu Mar 6 19:55:39 2008 relations with 2 large ideals: 4202
Thu Mar 6 19:55:39 2008 relations with 3 large ideals: 47149
Thu Mar 6 19:55:39 2008 relations with 4 large ideals: 288856
Thu Mar 6 19:55:39 2008 relations with 5 large ideals: 1057133
Thu Mar 6 19:55:39 2008 relations with 6 large ideals: 2391238
Thu Mar 6 19:55:39 2008 relations with 7+ large ideals: 8353648
Thu Mar 6 19:55:39 2008 commencing 2-way merge
Thu Mar 6 19:55:58 2008 reduce to 7715679 relation sets and 7546532 unique ideals
Thu Mar 6 19:55:58 2008 commencing full merge
Thu Mar 6 19:59:15 2008 memory use: 923.6 MB
Thu Mar 6 19:59:15 2008 found 4216899 cycles, need 4160732
Thu Mar 6 19:59:17 2008 weight of 4160732 cycles is about 270625461 (65.04/cycle)
Thu Mar 6 19:59:17 2008 distribution of cycle lengths:
Thu Mar 6 19:59:17 2008 1 relations: 592041
Thu Mar 6 19:59:17 2008 2 relations: 580481
Thu Mar 6 19:59:17 2008 3 relations: 549722
Thu Mar 6 19:59:17 2008 4 relations: 486665
Thu Mar 6 19:59:17 2008 5 relations: 421911
Thu Mar 6 19:59:17 2008 6 relations: 357647
Thu Mar 6 19:59:17 2008 7 relations: 298193
Thu Mar 6 19:59:17 2008 8 relations: 241011
Thu Mar 6 19:59:17 2008 9 relations: 189410
Thu Mar 6 19:59:17 2008 10+ relations: 443651
Thu Mar 6 19:59:17 2008 heaviest cycle: 17 relations
Thu Mar 6 19:59:18 2008 commencing cycle optimization
Thu Mar 6 19:59:25 2008 start with 20428107 relations
Thu Mar 6 20:00:05 2008 pruned 128617 relations
Thu Mar 6 20:00:05 2008 memory use: 706.6 MB
Thu Mar 6 20:00:05 2008 distribution of cycle lengths:
Thu Mar 6 20:00:05 2008 1 relations: 592041
Thu Mar 6 20:00:05 2008 2 relations: 581592
Thu Mar 6 20:00:05 2008 3 relations: 553367
Thu Mar 6 20:00:05 2008 4 relations: 489254
Thu Mar 6 20:00:05 2008 5 relations: 426001
Thu Mar 6 20:00:05 2008 6 relations: 359696
Thu Mar 6 20:00:05 2008 7 relations: 300095
Thu Mar 6 20:00:05 2008 8 relations: 240853
Thu Mar 6 20:00:05 2008 9 relations: 188975
Thu Mar 6 20:00:05 2008 10+ relations: 428858
Thu Mar 6 20:00:05 2008 heaviest cycle: 17 relations
Thu Mar 6 20:00:17 2008
Thu Mar 6 20:00:17 2008 commencing linear algebra
Thu Mar 6 20:00:19 2008 read 4160732 cycles
Thu Mar 6 20:00:38 2008 cycles contain 11903155 unique relations
Thu Mar 6 20:02:46 2008 read 11903155 relations
Thu Mar 6 20:03:07 2008 using 32 quadratic characters above 536870564
Thu Mar 6 20:05:06 2008 building initial matrix
Thu Mar 6 20:08:22 2008 memory use: 1580.3 MB
Thu Mar 6 20:08:24 2008 read 4160732 cycles
Thu Mar 6 20:08:41 2008 matrix is 4160564 x 4160732 (1201.9 MB) with weight 399461439 (96.01/col)
Thu Mar 6 20:08:41 2008 sparse part has weight 265150709 (63.73/col)
Thu Mar 6 20:09:27 2008 filtering completed in 2 passes
Thu Mar 6 20:09:29 2008 matrix is 4158147 x 4158315 (1201.7 MB) with weight 399361579 (96.04/col)
Thu Mar 6 20:09:29 2008 sparse part has weight 265129714 (63.76/col)
Thu Mar 6 20:10:39 2008 read 4158315 cycles
Thu Mar 6 20:10:51 2008 matrix is 4158147 x 4158315 (1201.7 MB) with weight 399361579 (96.04/col)
Thu Mar 6 20:10:51 2008 sparse part has weight 265129714 (63.76/col)
Thu Mar 6 20:10:51 2008 saving the first 48 matrix rows for later
Thu Mar 6 20:10:53 2008 matrix is 4158099 x 4158315 (1167.1 MB) with weight 309840159 (74.51/col)
Thu Mar 6 20:10:53 2008 sparse part has weight 264370975 (63.58/col)
Thu Mar 6 20:10:53 2008 matrix includes 64 packed rows
Thu Mar 6 20:10:53 2008 using block size 65536 for processor cache size 4096 kB
Thu Mar 6 20:11:24 2008 commencing Lanczos iteration (4 threads)
Thu Mar 6 20:11:24 2008 memory use: 1214.6 MB
Sat Mar 8 01:54:51 2008
Sat Mar 8 01:54:51 2008
Sat Mar 8 01:54:51 2008 Msieve v. 1.33
Sat Mar 8 01:54:51 2008 random seeds: 2d3f5fd0 2ef5217c
Sat Mar 8 01:54:51 2008 factoring 35045282158487636123259014292004089245227471550191132494367732831303373727594575532334779423274207863833033604171200909745257231922557618156366994601 (149 digits)
Sat Mar 8 01:54:52 2008 no P-1/P+1/ECM available, skipping
Sat Mar 8 01:54:52 2008 commencing number field sieve (149-digit input)
Sat Mar 8 01:54:52 2008 R0: -30104817950070729324593475027
Sat Mar 8 01:54:52 2008 R1: 5053580822033843
Sat Mar 8 01:54:52 2008 A0: 1582043507098494327107617309192676
Sat Mar 8 01:54:52 2008 A1: 39725247684687428138366842123
Sat Mar 8 01:54:52 2008 A2: -24684440038757266241210
Sat Mar 8 01:54:52 2008 A3: -2155369437080572429
Sat Mar 8 01:54:52 2008 A4: 88032011055
Sat Mar 8 01:54:52 2008 A5: 1417260
Sat Mar 8 01:54:52 2008 size score = 3.315952e-15, Murphy alpha = -5.040913, combined = 1.779734e-14
Sat Mar 8 01:54:52 2008
Sat Mar 8 01:54:52 2008 commencing linear algebra
Sat Mar 8 01:54:53 2008 read 4158315 cycles
Sat Mar 8 01:54:56 2008 matrix is 4158147 x 4158315 (1201.7 MB) with weight 399361579 (96.04/col)
Sat Mar 8 01:54:56 2008 sparse part has weight 265129714 (63.76/col)
Sat Mar 8 01:54:56 2008 saving the first 48 matrix rows for later
Sat Mar 8 01:54:58 2008 matrix is 4158099 x 4158315 (1167.1 MB) with weight 309840159 (74.51/col)
Sat Mar 8 01:54:58 2008 sparse part has weight 264370975 (63.58/col)
Sat Mar 8 01:54:58 2008 matrix includes 64 packed rows
Sat Mar 8 01:54:58 2008 using block size 65536 for processor cache size 4096 kB
Sat Mar 8 01:55:38 2008
Sat Mar 8 01:55:38 2008
Sat Mar 8 01:55:38 2008 Msieve v. 1.33
Sat Mar 8 01:55:38 2008 random seeds: 1e1aba23 9d91f5fa
Sat Mar 8 01:55:38 2008 factoring 35045282158487636123259014292004089245227471550191132494367732831303373727594575532334779423274207863833033604171200909745257231922557618156366994601 (149 digits)
Sat Mar 8 01:55:39 2008 no P-1/P+1/ECM available, skipping
Sat Mar 8 01:55:39 2008 commencing number field sieve (149-digit input)
Sat Mar 8 01:55:39 2008 R0: -30104817950070729324593475027
Sat Mar 8 01:55:39 2008 R1: 5053580822033843
Sat Mar 8 01:55:39 2008 A0: 1582043507098494327107617309192676
Sat Mar 8 01:55:39 2008 A1: 39725247684687428138366842123
Sat Mar 8 01:55:39 2008 A2: -24684440038757266241210
Sat Mar 8 01:55:39 2008 A3: -2155369437080572429
Sat Mar 8 01:55:39 2008 A4: 88032011055
Sat Mar 8 01:55:39 2008 A5: 1417260
Sat Mar 8 01:55:39 2008 size score = 3.315952e-15, Murphy alpha = -5.040913, combined = 1.779734e-14
Sat Mar 8 01:55:39 2008
Sat Mar 8 01:55:39 2008 commencing linear algebra
Sat Mar 8 01:55:40 2008 read 4158315 cycles
Sat Mar 8 01:55:43 2008 matrix is 4158147 x 4158315 (1201.7 MB) with weight 399361579 (96.04/col)
Sat Mar 8 01:55:43 2008 sparse part has weight 265129714 (63.76/col)
Sat Mar 8 01:55:43 2008 saving the first 48 matrix rows for later
Sat Mar 8 01:55:45 2008 matrix is 4158099 x 4158315 (1167.1 MB) with weight 309840159 (74.51/col)
Sat Mar 8 01:55:45 2008 sparse part has weight 264370975 (63.58/col)
Sat Mar 8 01:55:45 2008 matrix includes 64 packed rows
Sat Mar 8 01:55:45 2008 using block size 65536 for processor cache size 4096 kB
Sat Mar 8 01:56:17 2008 commencing Lanczos iteration (4 threads)
Sat Mar 8 01:56:17 2008 memory use: 1214.6 MB
Sat Mar 8 01:56:18 2008 restarting at iteration 44294 (dim = 2800781)
Sat Mar 8 15:08:46 2008 lanczos halted after 65762 iterations (dim = 4158097)
Sat Mar 8 15:08:55 2008 recovered 44 nontrivial dependencies
Sat Mar 8 15:08:56 2008 elapsed time 13:13:18
Sat Mar 8 15:08:56 2008
Sat Mar 8 15:08:56 2008
Sat Mar 8 15:08:56 2008 Msieve v. 1.33
Sat Mar 8 15:08:56 2008 random seeds: 3d43e06a a732b2b1
Sat Mar 8 15:08:56 2008 factoring 35045282158487636123259014292004089245227471550191132494367732831303373727594575532334779423274207863833033604171200909745257231922557618156366994601 (149 digits)
Sat Mar 8 15:08:58 2008 no P-1/P+1/ECM available, skipping
Sat Mar 8 15:08:58 2008 commencing number field sieve (149-digit input)
Sat Mar 8 15:08:58 2008 R0: -30104817950070729324593475027
Sat Mar 8 15:08:58 2008 R1: 5053580822033843
Sat Mar 8 15:08:58 2008 A0: 1582043507098494327107617309192676
Sat Mar 8 15:08:58 2008 A1: 39725247684687428138366842123
Sat Mar 8 15:08:58 2008 A2: -24684440038757266241210
Sat Mar 8 15:08:58 2008 A3: -2155369437080572429
Sat Mar 8 15:08:58 2008 A4: 88032011055
Sat Mar 8 15:08:58 2008 A5: 1417260
Sat Mar 8 15:08:58 2008 size score = 3.315952e-15, Murphy alpha = -5.040913, combined = 1.779734e-14
Sat Mar 8 15:08:58 2008
Sat Mar 8 15:08:58 2008 commencing square root phase
Sat Mar 8 15:08:58 2008 reading relations for dependency 1
Sat Mar 8 15:08:58 2008 read 2079326 cycles
Sat Mar 8 15:09:06 2008 cycles contain 7226553 unique relations
Sat Mar 8 15:15:09 2008 read 7226553 relations
Sat Mar 8 15:16:16 2008 multiplying 10147628 relations
Sat Mar 8 16:04:21 2008 multiply complete, coefficients have about 555.91 million bits
Sat Mar 8 16:04:47 2008 initial square root is modulo 97171
Sat Mar 8 17:41:31 2008 reading relations for dependency 2
Sat Mar 8 17:41:36 2008 read 2078713 cycles
Sat Mar 8 17:41:45 2008 cycles contain 7224575 unique relations
Sat Mar 8 17:47:24 2008 read 7224575 relations
Sat Mar 8 17:48:31 2008 multiplying 10148250 relations
Sat Mar 8 18:36:29 2008 multiply complete, coefficients have about 555.95 million bits
Sat Mar 8 18:36:54 2008 initial square root is modulo 97231
Sat Mar 8 20:13:15 2008 prp69 factor: 745832506848141808511611576240568244832258614550704416204357517716551
Sat Mar 8 20:13:15 2008 prp80 factor: 46988139879538892325015289211281843797083431443099045770269959929002737021425551
Sat Mar 8 20:13:15 2008 elapsed time 05:04:19