20200520, 14:10  #364 
Apr 2020
7×11 Posts 
Now running curves at 4e8. How much ECM do we reckon this number will need?

20200520, 16:33  #365 
"Curtis"
Feb 2005
Riverside, CA
19×223 Posts 
I use 0.31 * size for GNFS numbers, with a bit more for C195+ since the matrices are a bit of a bother. So, I'd personally be happy at around 1.5T60.
I did 1000 @15e7 and 500 @3e8 yesterday; I'll run some at 65e7 next, just a few hundred. 
20200524, 04:50  #366 
"Curtis"
Feb 2005
Riverside, CA
19×223 Posts 
New curves: 1000@65e7, 1000@85e7.
Last, trying 500@16e8. 
20200524, 12:40  #367 
Apr 2020
7×11 Posts 
Currently on 29000@4e8. We've probably done just over a t60 in total; I'll move up to 1e9.
I presume this will end up in the NFS@home 15e queue if ECM doesn't crack it. Probably a good idea to start the polynomial search soon? 
20200524, 15:23  #368 
"Curtis"
Feb 2005
Riverside, CA
4237_{10} Posts 
Agreed, I'll start poly select Monday afternoon after this last run of curves completes.
I expect to do some local sieving for it, as the 15e queue is backed up a fair bit and C197s are on the big end of the 15e comfort zone. I'll do, say, A=30 on Q=25100M because CADO is more efficient on low Q compared to ggnfs; that should be 15% of the job, give or take. 
20200525, 21:41  #369 
"Curtis"
Feb 2005
Riverside, CA
19×223 Posts 
500@16e8 finished. Starting poly select now.
Running 1e75e7 with P=6M and incr=4620. Leaving the low ad's for Sean & Ed to experiment with. 
20200526, 12:48  #370 
"Ed Hall"
Dec 2009
Adirondack Mtns
6270_{8} Posts 
Not sure what value is wanted for this poly, but my Msieve suggests:
Code:
min Evalue: 2.06e15 expecting poly E from 7.98e15 to > 9.18e15 Code:
n: 49166124173619026753031982944551526151417771554402090661062654848708821920824797208853190175969799268557269709859566937412206672909073923990203898320874417048790184714368584420136913755996169900623 skew: 125050816.141 c0: 100780658515871872306274606741432513729745330600 c1: 39547654921381624951406048498612939151914 c2: 429082982998007711345643654982747 c3: 7305269187829731646520191 c4: 14153532317442888 c5: 8837640 Y0: 102157892079785452666710108112736589239 Y1: 6898914490309534426789 # MurphyE (Bf=8.590e+09,Bg=4.295e+09,area=2.684e+16) = 7.256e09 # f(x) = 8837640*x^514153532317442888*x^4+7305269187829731646520191*x^3+429082982998007711345643654982747*x^239547654921381624951406048498612939151914*x100780658515871872306274606741432513729745330600 # g(x) = 6898914490309534426789*x102157892079785452666710108112736589239 Code:
215260513.93963 6.20323419e15 
20200526, 21:27  #371 
"Ed Hall"
Dec 2009
Adirondack Mtns
6270_{8} Posts 
I ran CADONFS with P=2M from 01e7 and P=12M for 01e6. I'm going to jump up to 2e8 and above for a while "just for fun."

20200526, 21:45  #372 
Apr 2020
7×11 Posts 
7000@1e9 completed. That should be enough ECM.
Might do some poly searching  what value of ropteffort do you guys recommend using? 
20200526, 22:57  #373 
"Curtis"
Feb 2005
Riverside, CA
19×223 Posts 
The rootopt phase is insignificant in time as a fraction of poly search time at this size, so I choose something big; I don't think there's any / much difference between 35 and 50, but I pick 40. 50 or 60 might search more on a small subset of polys, but not likely to improve things.

20200527, 18:49  #374 
Apr 2020
7×11 Posts 
Ran 5e715e7 with P=6M, same parameters as Curtis. This is the best I got:
Code:
n: 49166124173619026753031982944551526151417771554402090661062654848708821920824797208853190175969799268557269709859566937412206672909073923990203898320874417048790184714368584420136913755996169900623 skew: 10726805.758 c0: 62041855896374846734976480352559453307243919 c1: 86407605476371578679880507926689390979 c2: 1237169711766528739320735721169 c3: 2029521161120867427380351 c4: 625029182864520 c5: 1782742500 Y0: 62651154697255672749298406579454423016 Y1: 597457137027300338466379 # MurphyE (Bf=4.295e+09,Bg=4.295e+09,area=1.342e+16) = 5.807e09 
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