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Old 2021-01-05, 20:30   #2927
VBCurtis
 
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"Curtis"
Feb 2005
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Sure!
I'm happy to set it up on my public-facing workstation for a team-CADO job, or we can send it to nfs@home (likely to the 15e queue, it's on the edge of 15e and 16e for GGNFS).

WIth 20 cores, that would take me a couple months without help- so I would use nfs@home if nobody else has interest in sieving.
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Old 2021-01-05, 21:22   #2928
charybdis
 
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I'm happy to leave this one to NFS@home unless there's more interest in a quick team-sieve.

We need a polynomial in any case, so I'm starting a CADO run with P=4M, admax=10M, incr=420. Help is welcome, especially from the GPU folks.
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Old 2021-01-06, 01:10   #2929
swellman
 
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Quote:
Originally Posted by charybdis View Post
I'm happy to leave this one to NFS@home unless there's more interest in a quick team-sieve.

We need a polynomial in any case, so I'm starting a CADO run with P=4M, admax=10M, incr=420. Help is welcome, especially from the GPU folks.
Agreed - let NFS@Home take this sieving job using 15e.

I’m poly searching now using msieve-GPU for a baseline c5 < 1M. Msieve suggests a minimum e-score of 2.27e-14, with an objective e-score > 2.61e-14. The record scores found to date by MF.org for c189 and c190 are 2.468e-14 and 2.261e-14 respectively.
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Old 2021-01-06, 14:51   #2930
charybdis
 
Apr 2020

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Nothing exceptional from CADO, but here are the top 5:

Code:
skew: 31667446.08
c0: 635181421872748933108441699486115427125642808
c1: -74986650995391412139123003935796048006
c2: -5961875349757286664581459912419
c3: 124033538748440778455637
c4: 2080272602219742
c5: 18680760
Y0: -2235516949149518804069555918947048165
Y1: 851083597789145288034881
# e 2.335e-14

skew: 6738890.865
c0: 3008176798371571134141560458229782623007552
c1: -226612821899130689881043620942034881
c2: -733488110170332116047824761794
c3: 22864302063104231750729
c4: 8149403279819074
c5: 122533320
Y0: -2264547652597322743355287976870206966
Y1: 18766844300990818857555439
# e 2.324e-14

skew: 22109171.97
c0: -202107342825054844648166957778664214569163920
c1: 29210070866725397928080934163609660957
c2: 1685787361008931207987042692178
c3: -112491810246834689026289
c4: -4182404656009630
c5: 30723000
Y0: -2792332882301416522214996038614961686
Y1: 1264850521390214572621637
# e 2.297e-14

skew: 72790926.102
c0: 537998606088009273834399206094314700384642304
c1: 11403873838887849038978802132395579584
c2: -387595799274961375653764952136
c3: -146542705551392439871246
c4: -126475424055525
c5: 2851380
Y0: -3530821324166114229573825422256974795
Y1: 7269297095861234453870813
# e 2.281e-14

skew: 21852141.769
c0: 1312507633656801500515230865305827575845600
c1: 6568918199323513164095534661559716
c2: -9706996449424689305606176538
c3: -22061016894982017880514
c4: -151472083006355
c5: 4528440
Y0: -2583874558914609615325922449259599871
Y1: 5859566905830776616988543
# e 2.252e-14
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Old 2021-01-07, 08:42   #2931
Gimarel
 
Apr 2010

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My current best poly:
Code:
# norm 2.678191e-18 alpha -8.963268 e 2.857e-14 rroots 5
skew: 87271318.89
c0: -6381367517597696742295702359937525488210006576
c1: 202288237039298283646164033232164328687
c2: 13346320611031566286558670660366
c3: -32289428163110989016897
c4: -1983739878858060
c5: 3603600
Y0: -3106799826410507065935794801180448266
Y1: 1970023755595084066583
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Old 2021-01-07, 12:10   #2932
swellman
 
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Quote:
Originally Posted by Gimarel View Post
My current best poly:
Code:
# norm 2.678191e-18 alpha -8.963268 e 2.857e-14 rroots 5
skew: 87271318.89
c0: -6381367517597696742295702359937525488210006576
c1: 202288237039298283646164033232164328687
c2: 13346320611031566286558670660366
c3: -32289428163110989016897
c4: -1983739878858060
c5: 3603600
Y0: -3106799826410507065935794801180448266
Y1: 1970023755595084066583
Nice one!

Anyone planning on further searching? My best so far is < 2.2, not worth reporting.
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Old 2021-01-07, 13:06   #2933
charybdis
 
Apr 2020

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Quote:
Originally Posted by Gimarel View Post
My current best poly:
Code:
# norm 2.678191e-18 alpha -8.963268 e 2.857e-14 rroots 5
skew: 87271318.89
c0: -6381367517597696742295702359937525488210006576
c1: 202288237039298283646164033232164328687
c2: 13346320611031566286558670660366
c3: -32289428163110989016897
c4: -1983739878858060
c5: 3603600
Y0: -3106799826410507065935794801180448266
Y1: 1970023755595084066583
Very nice!
I won't be doing any more searching.
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Old 2021-01-07, 15:12   #2934
VBCurtis
 
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Feb 2005
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15% better than the record? Good 'nuff! I'll get the test-sieving done and post it to NFS@home 15e.
Thanks, Gimarel!
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Old 2021-01-07, 18:52   #2935
EdH
 
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"Ed Hall"
Dec 2009
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Would there be interest in a spin of Gimarel's poly with the same score (per cownoise), but some slightly different coefficients?:
Code:
Y0: -3106799826973484694619713165056005342
Y1: 1970023755595084066583
c0: 6438085155586451094305181312249920006185364100
c1: -194652502066212678819533374835599698159
c2: -13373029993154413720046858814578
c3: 30018896009608567503617
c4: 1988888918754060
c5: -3603600
skew: 64667535.397
cownoise:
Code:
87179018.38350     2.85703099e-14
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