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 2016-09-30, 03:35 #1 RichD     Sep 2008 Kansas 2×7×13×19 Posts Team sieve for OPN - 70841^53-1 Tracking Odd Perfect Number (OPN) 70841^53-1. I performed some quick heuristics, not so much to get an estimate but to get a feel for the division of -a and -r side processing. The following table is built with test sieving of 2000 (special-q) blocks. Not very representative but enough to show a trend. The first number is the ratio of rel/Q and the second is the percent increase in time (sec/rel). The base time @ 40M is within one percent between -a & -r so the base is nearly identical. Code:  special-q -> 40M 100M 150M 200M algebraic side 2.76/- 2.19/32 1.57/55 1.63/74 rational side 2.48/- 2.17/18 1.75/42 1.78/62 It appears the rational side is better at the higher special-q values. Perhaps a near 50-50 split would be in order. The algebraic side has been run to about 123.3M. We would know more as the statistics come in for each side. Code: # sieve with gnfs-lasieve4I15e. # OPN 70841^53-1 n: 1639870874590419433710052519894739183040918246691564654028160232651507013803494814368275258694299678055272788457973905696251342961581573918058718878360631706916568162337627046488755367758046805318319744365426748357609314760174184516928504686504427003173 skew: 1 c0: -70841 c6: 1 Y0: -44932661921134788129101965278651904868535161 Y1: 1 lpbr: 32 lpba: 32 mfbr: 64 mfba: 64 alambda: 2.6 rlambda: 2.6 alim: 200000000 rlim: 200000000 Run the siever using the following command: Code: gnfs-lasieve4I15e -f -c -o -r 70841_53.poly Add the -v switch if you want to see status updates every few seconds. (I like to watch the progress.) In case a restart is needed in the range, add the -R switch. (All range numbers must be full decimal representations. i.e., 42M = 42000000) Since ggnfs is single thread, multiple copies need to be run at the same time to utilize multiple cores. Be sure to use a different output_file_name for each range. Something like 70841_40M as signifying the starting point. The output files can be placed at any of the file sharing services: DropBox, RapidShare, SendSpace, etc. To start things off I'll take 40-66M on the -r side. Remember, the -a side is already at 123.3M.
 2016-09-30, 06:08 #2 VBCurtis     "Curtis" Feb 2005 Riverside, CA 32×563 Posts I'll take 66-75M.
 2016-09-30, 15:21 #3 amphoria     "Dave" Sep 2005 UK 23·347 Posts I'll take 75-91M on the r side. Last fiddled with by amphoria on 2016-09-30 at 15:54 Reason: Decided to take half based on initial sieving
 2016-10-01, 02:51 #4 RichD     Sep 2008 Kansas 2×7×13×19 Posts Whoa, bit off more than I thought. Looks like better than two weeks and it will be 7-8 days before my first results will be reported. I think the regulars are snickering knowing this is going to be several months of processing.
 2016-10-01, 03:51 #5 VBCurtis     "Curtis" Feb 2005 Riverside, CA 10011110010112 Posts My reservation will be 3+ weeks as well, 3M each on 3 cores.
 2016-10-07, 10:54 #6 amphoria     "Dave" Sep 2005 UK 23·347 Posts Taking 91-107M on the r side.
 2016-10-07, 11:08 #7 pinhodecarlos     "Carlos Pinho" Oct 2011 Milton Keynes, UK 3×1,663 Posts First post should have a trackdown of the reservations.
2016-10-08, 11:18   #8
amphoria

"Dave"
Sep 2005
UK

23·347 Posts

Quote:
 Originally Posted by amphoria I'll take 75-91M on the r side.
After cat'ing the files together and running through remdups4, this yielded 33.3M relations. They can be downloaded from 70841_75M.7z.

Last fiddled with by amphoria on 2016-10-08 at 11:20

 2016-10-09, 19:31 #9 RichD     Sep 2008 Kansas 2×7×13×19 Posts 40-48M is complete and remdups4 says 18.28M unique relations. Posted here. The rest of my range is over half complete.
 2016-10-11, 19:29 #10 RichD     Sep 2008 Kansas 345810 Posts Taking 107-123M on the -r side.
 2016-10-14, 11:01 #11 amphoria     "Dave" Sep 2005 UK 23×347 Posts Taking 123-139M on the r side.

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