20221006, 13:24  #2267 
"Ed Hall"
Dec 2009
Adirondack Mtns
2·3^{2}·7·43 Posts 
It didn't improve the score, but the skew is less (but cownoise gave it the larger value):
Code:
Y0: 3160720488954169809647881433776110225 Y1: 206652138316664557 c0: 502377242796846051412861486158312581951013472 c1: 202109221072104758561637579422432635540 c2: 804672126780554744203995454436 c3: 733179562200055375364395 c4: 411226933575522 c5: 15611400 skew: 29761061.935 # lognorm 60.72, E 52.85, alpha 7.86 (proj 2.44), 5 real roots # MurphyE(Bf=1.000e+07,Bg=5.000e+06,area=1.000e+16)=1.872e14 Best poly cownoise values: 54331349.26224 1.89513471e14 
20221007, 02:13  #2268 
"Vincent"
Apr 2010
Over the rainbow
2884_{10} Posts 
All I have is
Code:
Y0: 2349538120268076325451367548588041732 Y1: 216999369325580979475103209 c0: 206293291655300238669449774628062216958763830 c1: 82369996118667102223138428044151970345 c2: 10783262440833015945159774434694 c3: 1204927366434583621967761 c4: 35714675681032968 c5: 409368960 skew: 12071245.022 # lognorm 61.08, E 52.43, alpha 8.66 (proj 2.57), 3 real roots # MurphyE(Bf=1.000e+07,Bg=5.000e+06,area=1.000e+16)=1.828e14 Best poly cownoise values: 17364442.08261 1.84142550e14 
20221007, 07:37  #2269 
Apr 2010
100_{16} Posts 
C203_147_104
It took a while but now I have an exceptional poly:
Code:
# norm 1.034751e19 alpha 7.865818 e 3.781e15 rroots 5 skew: 114689002.27 c0: 136094338718696528763861227757666209052860504340 c1: 2585516710844056145050697469557179455871 c2: 248902306961428891522709892931234 c3: 1363500587643959285662657 c4: 20640309950741262 c5: 21621600 Y0: 1497348835519820920956356551277843806694 Y1: 90107121175535206837057 
20221007, 10:24  #2270  
Jun 2012
3,911 Posts 
Quote:
Thanks to all who searched. 

20221007, 12:14  #2271 
"Ed Hall"
Dec 2009
Adirondack Mtns
2·3^{2}·7·43 Posts 
Nice Gimarel! And, in all my efforts I haven't as yet found (or spun) a 2handle! (I know, I haven't modified Mseive. . .)

20221007, 15:01  #2272 
Jun 2012
3,911 Posts 
Meanwhile in the C190 poly search requested by @unconnected in post 2253 above: I found nothing better. Can’t seem to break the 2 barrier!
Afraid my search for a quality polynomial is in vain. 
20221009, 18:00  #2273 
May 2009
Moscow, Russia
101101101110_{2} Posts 
Thank you guys for your work, I'll testsieve top polys and send the best one to the 15e queue.

20221010, 19:55  #2274 
I moo ablest echo power!
May 2013
5×7×53 Posts 
If anyone is willing, I have a C208 that has blocked progression of Home Primes Base 2 (4496) for at least 3 years now. I previously did some poly searching for degree 5 and 6 (and even some test sieving, as I recall), but this number would likely benefit from the collective skills here. I will try and dig up that previous work in the mean time, but I would appreciate any attempts to find good polys for:
Code:
8095101662371927421703337019465587498085337648622133688278589711654019359923503887978141510461468343349838217540569173400647791769725685803537804186347867144149599002247585690859122186539724272741806859085719 
20221010, 20:22  #2275 
"Vincent"
Apr 2010
Over the rainbow
2^{2}×7×103 Posts 
I will try something with cadonfs

20221010, 20:35  #2276 
Jun 2012
3,911 Posts 
C208
I’m willing to help. I believe a deg 5 still works best on a C208 but others will likely have deeper insights. We could search for both a deg 5 and 6, with subsequent test sieving deciding the issue.
From the GNFS record table, escore > 1.3e15 looks great for deg 5, and > 1.6e15 for deg 6. Regardless, starting deg 5 search with a5 < 1M using msieveGPU. 
20221010, 20:37  #2277  
I moo ablest echo power!
May 2013
5×7×53 Posts 
Quote:


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