20201022, 21:08  #419 
"Curtis"
Feb 2005
Riverside, CA
1000101110101_{2} Posts 
Yea, my silicon is a bit dated: 2x 10core Ivy Bridge xeon @2.6ghz, 1x 12core haswell xeon @2.5ghz.
My choices for B1 across the board are based on the lowest B1 that get k=2 and are bigger than the standard B1 for a Tlevel: T45 2e7 T50 6e7 T55 15e7 T60 42e7 or 65e7 (65e7 is k=3, which means B2 jumps by 50% over B1=420M) Each of these is at least as fast to complete the related Tlevel as standard B1 choices, with the bonus of contributing a bit more chance to find a larger factor. Above T60, memory restricts our choices a bit ekeing out 5% more speed becomes secondary. 
20201025, 19:25  #420 
"Curtis"
Feb 2005
Riverside, CA
41×109 Posts 
4800 curves complete at 42e7.
I'm moving one machine to poly select for this number, while the other 20 cores continue on ECM at this size. Poly select is on CADO, 5e6 to 5e7 with incr 4620, P=3M, and nq 15625. A run from ~100k to 5e6 is welcome from any contributor, incr 420 is likely best down there. 
20201025, 21:23  #421 
"Ed Hall"
Dec 2009
Adirondack Mtns
5·13·53 Posts 
I'm just getting my "farm" settled back in from the recent task of upgrading everything. If I can, I'll try your suggested range this evening, if no one else steps up before then.

20201026, 05:50  #422 
Apr 2010
144_{10} Posts 
My best polys so far. The skew could be lower.
Code:
# norm 5.124552e19 alpha 7.806861 e 1.035e14 rroots 3 skew: 229473397.70 c0: 28975681727567524837662736904500125083895064840 c1: 2878364533279412069293098584050068952094 c2: 12328382189869072397837639510417 c3: 134638507067018387900322 c4: 724952625833220 c5: 514800 Y0: 106316329608766223087548646624002108221 Y1: 139198582645969222983109 # norm 5.098112e19 alpha 8.012851 e 1.030e14 rroots 5 skew: 125001952.15 c0: 24623140536189314142763591449244095867976653480 c1: 1591604144502435503327811672315382999292 c2: 45151115187254052425427334115817 c3: 227121374773875476420597 c4: 2975093123155512 c5: 6032880 Y0: 67399847496998630851429653894088679427 Y1: 125291089571292601013129 # norm 4.973943e19 alpha 7.015830 e 1.003e14 rroots 5 skew: 139217445.66 c0: 7255470118724953101983117852152337087695168335 c1: 149796856433933965973020367862770013258 c2: 16841679768648646355805881003315 c3: 102010909982219747276718 c4: 911111469275220 c5: 514800 Y0: 106316339675995109699546585110006980568 Y1: 139198582645969222983109 
20201026, 13:35  #423 
"Ed Hall"
Dec 2009
Adirondack Mtns
3445_{10} Posts 
I didn't turn up anything near 1e14.

20201026, 13:47  #424 
Apr 2010
2^{4}·3^{2} Posts 

20201026, 13:52  #425  
"Ed Hall"
Dec 2009
Adirondack Mtns
5·13·53 Posts 
Quote:
Edit: I decided to try the default CADONFS parameters. . . Last fiddled with by EdH on 20201026 at 14:00 

20201027, 01:08  #426 
Apr 2020
113 Posts 
ECM progress: 7200@40e7 and 26000@42e7. Together with Curtis's work shall we call that enough?
I'd help out with the polyselect but Gimarel's polys all break the old c196 record so I don't think there would be much point. 
20201027, 03:38  #427 
"Curtis"
Feb 2005
Riverside, CA
10565_{8} Posts 
I'm at 6000 @ 42e7, calling it quits. I agree that's enough.
I also agree that Gimarel's records plus the two CADO efforts Ed and I put in are easily enough poly select. I'll testsieve the best CADO and Gimarel's polys in a day or two, and get the job posted to the new 16esmall queue on NFS@home by Saturday. Ed, that gives you until Wed morning to supply a poly! If you get something within 5% of Gimarel's score, I'll testsieve it. My poly search will finish Tuesday evening. 
20201027, 12:50  #428  
"Ed Hall"
Dec 2009
Adirondack Mtns
D75_{16} Posts 
Quote:
Should we see if Max would like to spin any of these? * I might do some experimentation today while this continues to run, by trying to run a separate machine to work on what I have. But, I really haven't tried this before, so I'm not sure how how to approach it and how it may turn out. Then, again, what are the odds that the best poly would be found in the last few hours of the search? (Since Gimarel's scores are new records, I'd hate to beat them so soon. But, then again, he does have some others.) 

20201027, 15:23  #429 
"Curtis"
Feb 2005
Riverside, CA
41×109 Posts 
I'd just let it run; rootopt will only take a couple hours, and it's not like I'll be waiting on you Wednesday in any case.

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Primes in nfibonacci sequence and nstep fibonacci sequence  sweety439  And now for something completely different  17  20170613 03:49 
Team sieve #41: C165 from 3366:i2098  RichD  Aliquot Sequences  36  20131129 07:03 
80M to 64 bits ... but not really reserved  petrw1  Lone Mersenne Hunters  82  20100111 01:57 
What's the next in the sequence?  roger  Puzzles  16  20061018 19:52 
Sequence  Citrix  Puzzles  5  20050914 23:33 