Linear algebra reservations, progress and results

[Jarod]

Please find attached the results. I was unable to contact Lionel or William due to email bounce backs. Have they changed addresses?

p77 factor: 42540925808331363823034680213324772999806051189285254465098316591582635377711
p116 factor: 17301772301809665201147561782654376686987889235547424073058654232715039129322417881016404742310381326498569042597969

[RichD]

Taking 124^109+109^124 C236 cofactor (15e).

[Dubslow]

Originally Posted by Dubslow

I'll reserve XY_C234_138_130.

commencing linear algebra
matrix starts at (0, 0)
matrix is 16723287 x 16723464 (8081.5 MB) with weight 2359189512 (141.07/col)
sparse part has weight 1934555532 (115.68/col)
saving the first 48 matrix rows for later
matrix includes 64 packed rows
matrix is 16723239 x 16723464 (7814.0 MB) with weight 2038792292 (121.91/col)
sparse part has weight 1881147400 (112.49/col)
using block size 8192 and superblock size 589824 for processor cache size 6144 kB
commencing Lanczos iteration (4 threads)
memory use: 6702.2 MB
restarting at iteration 226766 (dim = 14340037)
linear algebra at 85.8%, ETA 44h51mf 16723464 dimensions (85.8%, ETA 44h51m)    
checkpointing every 60000 dimensions 16723464 dimensions (85.8%, ETA 45h44m)    
linear algebra completed 16723197 of 16723464 dimensions (100.0%, ETA 0h 0m)    
lanczos halted after 264460 iterations (dim = 16723239)
recovered 42 nontrivial dependencies
BLanczosTime: 191155

commencing square root phase
reading relations for dependency 1
read 8363190 cycles
cycles contain 28790954 unique relations
read 28790954 relations
multiplying 28790954 relations
multiply complete, coefficients have about 763.06 million bits
initial square root is modulo 7011811
GCD is N, no factor found
reading relations for dependency 2
read 8364647 cycles
cycles contain 28790682 unique relations
read 28790682 relations
multiplying 28790682 relations
multiply complete, coefficients have about 763.05 million bits
initial square root is modulo 7010671
GCD is N, no factor found
reading relations for dependency 3
read 8360340 cycles
cycles contain 28784876 unique relations
read 28784876 relations
multiplying 28784876 relations
multiply complete, coefficients have about 762.90 million bits
initial square root is modulo 6988483
GCD is 1, no factor found
reading relations for dependency 4
read 8361206 cycles
cycles contain 28781164 unique relations
read 28781164 relations
multiplying 28781164 relations
multiply complete, coefficients have about 762.82 million bits
initial square root is modulo 6976267
GCD is 1, no factor found
reading relations for dependency 5
read 8359772 cycles
cycles contain 28776332 unique relations
read 28776332 relations
multiplying 28776332 relations
multiply complete, coefficients have about 762.68 million bits
initial square root is modulo 6956647
sqrtTime: 17485
p81 factor: 603346602623784249384664500586104939216308535845076644442470413922310180379730957
p154 factor: 1448373742983041165762521007216331738695281353809294017350861974660508985534331932389449042257589879218436355868524683515862743041649094657931369097612697
elapsed time 57:57:21

https://pastebin.com/yBa7KBzV

A cursory search indicates C185_226741_43(b) is available. Can anyone confirm?

[swellman]

Originally Posted by Dubslow

A cursory search indicates C185_226741_43(b) is available. Can anyone confirm?

No it is already reserved.

[Dubslow]

Originally Posted by swellman

No it is already reserved.

The forum search lies

[RichD]

About 48 hours to solve a 9.0M matrix using -t 4, with TD=108. (TD=112 failed)

p76 factor: 5144702897812972712336871119687690264181833151461035003982738237800125804101
p125 factor: 10002992628750217438777813082098556508545793550535653201516360855790925531429764972498794957641052589341428122053936322007071

https://pastebin.com/K5yjVv2e

[RichD]

Taking 5869^71-1 (15e) next.

[swellman]

I’ll take 124^109+109^124 C236 cofactor. I have several numbers finishing factorization in the next few days. Thanks.

[RichD]

Originally Posted by swellman

I’ll take 124^109+109^124 C236 cofactor. I have several numbers finishing factorization in the next few days. Thanks.

See http://www.mersenneforum.org/showpos...postcount=2499.
It has about 175 hours remaining in LA.

[swellman]

My bad! I’ll take 140^67 + 67^140 C234 cofactor. Thanks.

[RichD]

My most recent request won't complete downloading until tomorrow noon. I expect that job to be several weeks. I won't be taking anything else for a while. (week+)