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 2005-01-18, 14:36 #1 garo     Aug 2002 Termonfeckin, IE 2×5×251 Posts 3- table Code: 275 3 667 - 318.2 0.862 259 3 677 - 323 0.800 265 3 691 - 329.6 0.802 269 3 703 - 335.4 0.800 211 3 715 - 272.9 0.771 /q 217 3 725 - 276.7 0.782 /q 265 3 731 - 348.7 0.76 302 3 733 - 349.7 0.862 285 3 739 - 352.5 0.806 277 3 745 - 284.3 0.972 /q 321 3 751 - 358.3 0.894 294 3 769 - 366.9 0.80 303 3 773 - 368.8 0.82 310 3 779 - 371.6 0.832 280 3 791 - 323.4 0.864 /7 357 3 797 - 380.2 0.937 325 3 803 - 348.2 0.931 /11q 289 3 809 - 385.9 0.747 318 3 811 - 386.9 0.82 220 3 815 - 311 0.705 /5q 322 3 817 - 389.8 0.824 351 3 823 - 392.6 0.892 369 3 827 - 394.5 0.933 337 3 829 - 395.5 0.85 266 3 835 - 318.7 0.833 /5q 376 3 839 - 400.3 0.938 295 3 841 - 401.2 0.733 Last fiddled with by Batalov on 2020-05-16 at 02:36 Reason: 3,661- is done!
 2005-08-22, 06:55 #2 akruppa     "Nancy" Aug 2002 Alexandria 25·7·11 Posts I've done 5500 curves with B1=44M, B2=192G on 3,575- c145. This adds 0.7116765 to the p50 and 0.1087279 to the p55 level. I've done 5031 curves at B1=44M on 3,461- c157. This adds 0.65099 to the p50 level and 0.099456 to the p55 level. 4500 curves at B1=44M and 1960 curves at B1=110M on 3,461- c157. Adds 1.2079 to p50, 0.19926 to p55 and .01763 to p60. 7020 curves on 3,487- c222. Adds 0.915135 to p50 and 0.139882 to p55. 6420 curves at B1=110M on 3,545-. Adds 10.4052 to p45, 2.03486 to p50 and .3586793 to p55. Alex Edit: these are done. Last fiddled with by akruppa on 2007-12-14 at 12:00 Reason: Done.
 2005-10-25, 03:35 #3 akruppa     "Nancy" Aug 2002 Alexandria 25×7×11 Posts 3,493- factored Code: Using B1=44000000, B2=184367799126, polynomial Dickson(12), sigma=2788982786 Step 1 took 303437ms Step 2 took 104484ms ********** Factor found in step 2: 24461879114558805437371311641297107167592931037239137 Found probable prime factor of 53 digits: 24461879114558805437371311641297107167592931037239137 Probable prime cofactor 1129640333764056177294439666404700255828107373415876970165296726317175020432573835347435530623066284493507472043821204220698159646195998669797221 has 145 digits Alex
2005-10-25, 10:55   #4
fatphil

May 2003

E716 Posts

Quote:
 Originally Posted by akruppa Code: Using B1=44000000, B2=184367799126, polynomial Dickson(12), sigma=2788982786 Found probable prime factor of 53 digits: 24461879114558805437371311641297107167592931037239137 Probable prime cofactor 1129640333764056177294439666404700255828107373415876970165296726317175020432573835347435530623066284493507472043821204220698159646195998669797221 has 145 digits Alex
Pah, 53 digit's is nothing nowadays ;-)

Anyway, seems like the ECM gods are favouring your machines presently. Milk it while it lasts!

2005-10-25, 15:15   #5
R.D. Silverman

Nov 2003

26×113 Posts

Quote:
 Originally Posted by akruppa Code: Using B1=44000000, B2=184367799126, polynomial Dickson(12), sigma=2788982786 Step 1 took 303437ms Step 2 took 104484ms ********** Factor found in step 2: 24461879114558805437371311641297107167592931037239137 Found probable prime factor of 53 digits: 24461879114558805437371311641297107167592931037239137 Probable prime cofactor 1129640333764056177294439666404700255828107373415876970165296726317175020432573835347435530623066284493507472043821204220698159646195998669797221 has 145 digits Alex
I am very glad to see that other people are helping out Bruce.

There are only 8 base 3 numbers left with exponent < 400.
One of them is relatively easy (3,497+). Perhaps NFSNET might do them
when they finish base 2 to 768 bits?

OTOH, if one decides which numbers to do next on the basis of which
ones have been been among the first 5 holes for the longest time, then the
first few numbers in the 5 +/- table would be next.

2005-10-25, 15:16   #6
R.D. Silverman

Nov 2003

26×113 Posts

Quote:
 Originally Posted by R.D. Silverman I am very glad to see that other people are helping out Bruce. There are only 8 base 3 numbers left with exponent < 400. One of them is relatively easy (3,497+). Perhaps NFSNET might do them when they finish base 2 to 768 bits? OTOH, if one decides which numbers to do next on the basis of which ones have been been among the first 5 holes for the longest time, then the first few numbers in the 5 +/- table would be next.
Typo. 400 ----> 500

2005-10-25, 16:25   #7
xilman
Bamboozled!

"πΊππ·π·π­"
May 2003
Down not across

3·3,371 Posts

Quote:
 Originally Posted by R.D. Silverman One of them is relatively easy (3,497+). Perhaps NFSNET might do them when they finish base 2 to 768 bits?
I (and core-searchers of course) have done quite a bit of work on the base 3 tables. They were loaded into the main ECMNET server for quite a few months a few years ago.

A few numbers just beyond the present limits of the Cunningham table have been factored as well. I kicked off a search for factors of small 3LM numbers and recent;y factored GW(3,729), which in Cunningham nomenclature would be 3,735-.

Personally I'd like to see the base 3 tables cleared out as I believe it is long past the time when they should have been extended to higher indices. That's why I put some effort into them.

Paul

 2005-10-25, 16:56 #8 akruppa     "Nancy" Aug 2002 Alexandria 25×7×11 Posts I've lined up 3,497+ for sieving tonight. Yep, I said tonight - the cluster will do all the sieving in 12 hours elapsed. Using half of the available cpus. It's a monster. Alex
 2005-10-26, 00:46 #9 Zeta-Flux     May 2003 27628 Posts Sweet!
 2005-11-06, 16:12 #10 akruppa     "Nancy" Aug 2002 Alexandria 25×7×11 Posts 3,449- Code: Probable prime factor 1 has 128 digits: 15748759298706358069411432967020988991952419984342025742908426818152096923966014988214123945705036628575384848703627025281967817 Probable prime factor 2 has 48 digits: 430763314083559275178358410713636609779704909657 Hmpf.. another ECM miss. Alex
2005-11-07, 13:40   #11
R.D. Silverman

Nov 2003

26×113 Posts

Quote:
 Originally Posted by akruppa 8720 curves at B1=44M on 3,553-. Adds 6.72320 to p45, 1.13674 to p50 and 0.17375 to p55. 6142 curves at B1=44M on 3,565-. Adds 4.73554 to p45, 0.80067 to p50 and 0.12238 to p55. Alex
Not having a lot of luck???

I would have expected a couple more factors.....

At least we know that these numbers are really ready for NFS......

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