20190315, 01:50  #1717  
"Max"
Jun 2016
Toronto
19·37 Posts 
C206 poly degree 6  1.95
Quote:
But it's degree 6. Will it sieve better? Code:
Y0: 1538110509013620412372134421308659 Y1: 74881205760971794 c0: 1446560752975762872083356841587900498554577200 c1: 3766745954017790911698864365082729049350 c2: 2649277663818371317849409707330487 c3: 2394123180446139085639071247 c4: 570995136993799351822 c5: 230592376178508 c6: 19352256 skew: 2580555.41248 # lognorm 59.77, E 49.68, alpha 10.09 (proj 1.87), 6 real roots # MurphyE(Bf=1.000e+07,Bg=5.000e+06,area=1.000e+16)=1.952e15 Last fiddled with by Max0526 on 20190315 at 02:39 

20190315, 02:18  #1718  
"Max"
Jun 2016
Toronto
19×37 Posts 
C206 poly degree 6  2.017
Quote:
I probably can make it higher, it's just after 3.5 min of spin. Code:
Y0: 12601232873195375545450587523347632672883 Y1: 743324161454990349821163538 c0: 48832161596787096493393187437766185114842126397550 c1: 205648255335205404935808363185396705274975 c2: 1052812051562592448697276219220869 c3: 1475476235275407031396575 c4: 2265743403238791 c5: 1411200 skew: 596716219.75 # size 3.095e20, alpha 7.489, combined = 2.017e15 rroots = 3 Last fiddled with by Max0526 on 20190315 at 02:40 

20190315, 02:39  #1719  
"Max"
Jun 2016
Toronto
19×37 Posts 
C206 poly
Quote:


20190315, 03:06  #1720  
"Curtis"
Feb 2005
Riverside, CA
11·409 Posts 
Quote:
I'll testsieve this weekend, too; Sean mentioned frmky usually uses alim = rlim = 536M for inputs this size, so I'll try that and see what yield is like. 

20190315, 03:21  #1721  
"Max"
Jun 2016
Toronto
19·37 Posts 
C206 poly  2.103 and 2.107
Quote:
Last fiddled with by Max0526 on 20190315 at 03:32 

20190315, 04:22  #1722  
"Max"
Jun 2016
Toronto
19×37 Posts 
C206 poly
Quote:
Code:
# norm 1.563823e24 alpha 7.718866 e 1.834e15 rroots 3 skew: 1195708201.97422 c0: 1308013145682203235921791846993890994906709837883805 c1: 2480261159146718267773058682439963878133938 c2: 3006841586003824986868630992097940 c3: 4082857057755985761817794 c4: 2670257077726791 c5: 705600 Y0: 12601190259138135484577170468444511365284 Y1: 371662080727495174910581769 

20190315, 05:07  #1723 
"Max"
Jun 2016
Toronto
19·37 Posts 
C206 polys  the three above 2.1
The three best polys [so far ;) ] with the E > 2.1e15. The first and last seem to have the same alpha and number of roots. All skews are different and were optimized by http://cownoise.com/.
Code:
Y0: 12601188141691177666904742646406365493031 Y1: 743324161454990349821163538 c0: 80861604392230511460818572744874760814432195796792 c1: 314265373520508376909781846026746875237031 c2: 734134308227143674162327314923583 c3: 2071969217344750528293831 c4: 2690356929862791 c5: 1411200 skew: 597950211.83 # size 3.418e20, alpha 7.633, combined = 2.111e15 rroots = 3 Code:
Y0: 12601339721892862582748708202204842976691 Y1: 743324161454990349821163538 c0: 137590190631534878358422419258553863917875388884862 c1: 164573777586510141237335590511706400855489 c2: 1450105737514750858673830964438693 c3: 464312981092984010304351 c4: 1251482803942791 c5: 1411200 skew: 758009406.84691 # lognorm 64.15, E 56.09, alpha 8.06 (proj 1.97), 1 real root # MurphyE(Bf=1.000e+07,Bg=5.000e+06,area=1.000e+16) = 2.107e15 Code:
Y0: 12601310268654152821876683800363585596851 Y1: 743324161454990349821163538 c0: 105279833837254024353264581011870638143550621803582 c1: 52174663792680045663118941643393433715009 c2: 1382245216053833380565883756313253 c3: 684822745956980314667871 c4: 1531067490022791 c5: 1411200 skew: 649347173.63761 # lognorm 64.03, E 56.39, alpha 7.63 (proj 1.97), 3 real roots # MurphyE(Bf=1.000e+07,Bg=5.000e+06,area=1.000e+16) = 2.103e15 
20190315, 08:55  #1724 
Jun 2012
2^{4}×181 Posts 
Nicely done! I’m stopping my search  nothing comes close to these values.
Good job! 
20190315, 13:55  #1725  
Mar 2016
2·29 Posts 
Quote:
What kind of 'gain' i can get? I'm using yafu v1.34.5. Regards, cubaq 

20190315, 15:32  #1726 
"Curtis"
Feb 2005
Riverside, CA
4499_{10} Posts 
Yes, but usually doing so will reduce sieve speed. There is a best (fastest) skew for each polynomial, and it's sometimes not the one msieve calculates. There are a couple tools out there to doublecheck optimal skew. We're talking potential savings of 13%; not worth the manual labor on a C150 but possibly a coreyear of time savings at C200+.

20190315, 15:42  #1727  
Mar 2016
2·29 Posts 
Quote:
Thanks a lot for quick reply VBCurtis. As far as I am doing not 'more' than C160 it ends a case. cubaq Last fiddled with by cubaq on 20190315 at 15:44 

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