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 2020-05-20, 14:10 #364 charybdis   Apr 2020 7×11 Posts Now running curves at 4e8. How much ECM do we reckon this number will need?
 2020-05-20, 16:33 #365 VBCurtis     "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.
 2020-05-24, 04:50 #366 VBCurtis     "Curtis" Feb 2005 Riverside, CA 19×223 Posts New curves: 1000@65e7, 1000@85e7. Last, trying 500@16e8.
 2020-05-24, 12:40 #367 charybdis   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?
 2020-05-24, 15:23 #368 VBCurtis     "Curtis" Feb 2005 Riverside, CA 423710 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=25-100M because CADO is more efficient on low Q compared to ggnfs; that should be 15% of the job, give or take.
 2020-05-25, 21:41 #369 VBCurtis     "Curtis" Feb 2005 Riverside, CA 19×223 Posts 500@16e8 finished. Starting poly select now. Running 1e7-5e7 with P=6M and incr=4620. Leaving the low ad's for Sean & Ed to experiment with.
 2020-05-26, 12:48 #370 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 62708 Posts Not sure what value is wanted for this poly, but my Msieve suggests: Code: min E-value: 2.06e-15 expecting poly E from 7.98e-15 to > 9.18e-15 If I'm reading this correctly, this first post is shy of expectations, but well over the min (but, does Msieve E match cownoise E?): 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) = 7.256e-09 # f(x) = -8837640*x^5-14153532317442888*x^4+7305269187829731646520191*x^3+429082982998007711345643654982747*x^2-39547654921381624951406048498612939151914*x-100780658515871872306274606741432513729745330600 # g(x) = 6898914490309534426789*x-102157892079785452666710108112736589239 cownoise says: Code: 215260513.93963 6.20323419e-15
 2020-05-26, 21:27 #371 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 62708 Posts I ran CADO-NFS with P=2M from 0-1e7 and P=12M for 0-1e6. I'm going to jump up to 2e8 and above for a while "just for fun."
 2020-05-26, 21:45 #372 charybdis   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?
 2020-05-26, 22:57 #373 VBCurtis     "Curtis" Feb 2005 Riverside, CA 19×223 Posts The root-opt 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.
 2020-05-27, 18:49 #374 charybdis   Apr 2020 7×11 Posts Ran 5e7-15e7 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) = 5.807e-09 Cownoise score is 7.35059861e-15.

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