20130713, 18:50  #23  
(loop (#_fork))
Feb 2006
Cambridge, England
2×7×461 Posts 
Quote:
Code:
23847813234751095518553790092375554156554053397317779773831395300907022889988067196688707035368393323174109573706580716877436977083912429179428455659750299481884888866554791173 If that's too big, Code:
86026587992252713187749194939696412639941777372908947403799022828963200928303537489025731813345034713461276262988371957157619420275286481805832459392273827 would also be of interest 

20130713, 19:01  #24 
"Vincent"
Apr 2010
Over the rainbow
5×571 Posts 
I'll give a nudge to the 176. I'll report back in few hours no garantee of a good poly.
Last fiddled with by firejuggler on 20130713 at 19:02 
20130713, 19:34  #25 
I moo ablest echo power!
May 2013
2^{2}×11×41 Posts 
I'll take a whack at the 176 as well.

20130713, 20:08  #26 
"Curtis"
Feb 2005
Riverside, CA
13×421 Posts 
Big is good if I have the sievetime estimates correct, all three of us can spend a few days on this number productively.
I'll start at 23.5M. 
20130713, 20:19  #27 
"Vincent"
Apr 2010
Over the rainbow
5·571 Posts 
What range do you recommand? 8M? or above, 40M?

20130713, 20:20  #28 
I moo ablest echo power!
May 2013
2^{2}×11×41 Posts 
I'm running 100M+ (polydegree 5).

20130713, 20:58  #29 
"Curtis"
Feb 2005
Riverside, CA
13·421 Posts 
I think anything 10M+ will have skew roughly similar. Even though overlapping ranges only duplicates a little bit of work, it's easy enough to search different ranges.
We can report our typical skews for the lists of decent polys to make sure 20m, 100m, and whatever you choose really are similar. 
20130714, 01:01  #30 
I moo ablest echo power!
May 2013
2^{2}×11×41 Posts 
Sounds like a good idea. It'd be nice to know how the skew varies (or doesn't) for given ranges. Here's my first one so farit's a fair bit under the expected range:
Code:
expecting poly E from 1.46e013 to > 1.68e013 R0: 2988691192272804298611698595599499 R1: 237161778113747539 A0: 32731363407803097195252649322319485122428800 A1: 3923946321852883713926555500462761080 A2: 1172068129952158854846849214634 A3: 65955053275793992651415 A4: 8394258833127276 A5: 100009980 skew 13540340.13, size 2.166e017, alpha 8.427, combined = 1.085e013 rroots = 5 Code:
polynomial selection complete R0: 2988105935112559387239257538404549 R1: 262138118976309551 A0: 1684154512885205386857910460902575111600 A1: 40913519008928283606564309026397940 A2: 42965292076801711799985554792 A3: 3340385908071805886631 A4: 682953059486718 A5: 100107960 skew 4054135.37, size 2.263e017, alpha 6.468, combined = 1.142e013 rroots = 3 Last fiddled with by wombatman on 20130714 at 01:50 
20130714, 04:16  #31 
"Curtis"
Feb 2005
Riverside, CA
13×421 Posts 
Skews for coeff = 23M are 712M for alphas in the 6's, 11 to 16M for alpha over 7. Best score after a few hours is 1.24e13 w/skew 8.7M.
Last fiddled with by VBCurtis on 20130714 at 04:17 
20130714, 06:53  #32 
"Curtis"
Feb 2005
Riverside, CA
1561_{16} Posts 
Update: Score 1.32e13, skew 7.3M. Since wombatman's skews are lower than mine, I'll add a zero for tomorrow's run after a C152 run for RichD's aliqueit sequence.

20130714, 08:27  #33 
"Vincent"
Apr 2010
Over the rainbow
5·571 Posts 
For the C176
Code:
R0: 2258685475663263250324560136301285 R1: 140428258550291 A0: 802438015828677555679491307924381393152 A1: 36920184606841951622303727157923495 A2: 41481464461097192689035440776 A3: 488488458101203216750 A4: 4075532791202328 A5: 405667080 skew 2987703.90, size 2.744e017, alpha 6.656, combined = 1.281e013 rroots = 5 Last fiddled with by firejuggler on 20130714 at 08:29 
Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
GIMPS wiki account request thread  ixfd64  mersennewiki  169  20180921 05:43 
Polynomial Discriminant is n^k for an n1 degree polynomial  carpetpool  Miscellaneous Math  14  20170218 19:46 
Lost Prime Raider password request thread  cheesehead  Forum Feedback  6  20090728 13:02 
Polynomial  R.D. Silverman  NFSNET Discussion  13  20050916 20:07 
Deutscher Thread (german thread)  TauCeti  NFSNET Discussion  0  20031211 22:12 