C189 poly
 

Sorry, RichD, I can't spin it up.

C189
 

[code]
# norm 1.972508e-18 alpha -7.320809 e 2.277e-14 rroots 5
skew: 62154387.28
c0: -742472019712335182449815911448123219145883175
c1: 98910216826925313313788466202187565030
c2: 276621590163150246405029460524
c3: -255449894109210212034725
c4: -402380513406054
c5: 3455760
Y0: -2304729887525605126349748056045194748
Y1: 343170577639422329
[/code]

Not very good. Finished searching 2-4M, going back to 1-2M.

C189
 

[QUOTE=swellman;497354][code]
# norm 1.972508e-18 alpha -7.320809 e 2.277e-14 rroots 5
skew: 62154387.28
c0: -742472019712335182449815911448123219145883175
c1: 98910216826925313313788466202187565030
c2: 276621590163150246405029460524
c3: -255449894109210212034725
c4: -402380513406054
c5: 3455760
Y0: -2304729887525605126349748056045194748
Y1: 343170577639422329
[/code]Not very good. Finished searching 2-4M, going back to 1-2M.[/QUOTE]
Can't spin this one up, sorry.

C187 poly -- 3.7
 

Another good poly from CADO:
[code]
Y0: -1259493548392042769882906818753681391
Y1: 185455710657292401216649
c0: -28220253876416597806317500912112890394748960
c1: 8637713173670125297657030463351350252
c2: 258834671492054099476567919685
c3: -10077804233119133794991
c4: -126114556165846
c5: 1658160
skew: 46187559.54
# size 3.355e-18, alpha -6.593, combined = 3.728e-14 rroots = 5
[/code]

C187 poly
 

Another good poly:
[code]
# norm 4.059370e-18 alpha -7.540930 e 3.689e-14 rroots 3
skew: 79452254.64
c0: 1597783272955284580594271751328338822228265010
c1: 12518487475884727189052069613218111527
c2: -659131543181910166055482629100
c3: -12740705212714398962551
c4: 69757376356154
c5: 1658160
Y0: -1259489166961005513558610209159476856
Y1: 185455710657292401216649
[/code]

C189 Poly
 

Finished 4-6M range. I'll wait to see if more work is needed as others report in.
[CODE]R0: -2081756503395679178520814507681255882
R1: 1335188409922149883
A0: -15992004613545394162396734343200293158693723665
A1: 40426254071009516001586807347838905666
A2: 31814408383012890639195466111952
A3: 208041959807669871995290
A4: -6736548304196335
A5: 5747700
skew 76502975.57, size 1.514e-18, alpha -8.329, combined = 2.180e-14 rroots = 5[/CODE]

C189
 

[QUOTE=RichD;497456]Finished 4-6M range. I'll wait to see if more work is needed as others report in.
[CODE]R0: -2081756503395679178520814507681255882
R1: 1335188409922149883
A0: -15992004613545394162396734343200293158693723665
A1: 40426254071009516001586807347838905666
A2: 31814408383012890639195466111952
A3: 208041959807669871995290
A4: -6736548304196335
A5: 5747700
skew 76502975.57, size 1.514e-18, alpha -8.329, combined = 2.180e-14 rroots = 5[/CODE][/QUOTE]

I’m currently searching 1-2M, but do not know of anyone else working this C189. Test sieving has convinced me [url=https://www.mersenneforum.org/showpost.php?p=497027&postcount=1537]the best poly so far was found by you with spin from Max[/url]. And its e-score of 2.468e-14 is in the anticipated range of msieve for a GNFS 189 job.

It seems a straight -a job with 2LPs on each side. Additional test sieving with 3LPs were not fruitful. Not sure how much better we can get. Willing to stop after my current search range, but I can keep going if anyone thinks it’s worthwhile. To my knowledge, 6M is the upper search limit to date. Thanks to firejuggler and RichD for their efforts on this composite to date.

C189 poly
 

[QUOTE=RichD;497456]Finished 4-6M range. I'll wait to see if more work is needed as others report in.
[CODE]R0: -2081756503395679178520814507681255882
R1: 1335188409922149883
A0: -15992004613545394162396734343200293158693723665
A1: 40426254071009516001586807347838905666
A2: 31814408383012890639195466111952
A3: 208041959807669871995290
A4: -6736548304196335
A5: 5747700
skew 76502975.57, size 1.514e-18, alpha -8.329, combined = 2.180e-14 rroots = 5[/CODE][/QUOTE]
Spins up to
[code]
Y0: -2081756503394740627855885881253249277
Y1: 2670376819844299766
c0: -996737306817562373360982827160009372904294680
c1: 10681526962638718788343685348683365582
c2: 8058294097160466389074291080788
c3: 94564468938470839673695
c4: -6716347006698835
c5: 11495400
skew: 38380792.44143
# size 1.700e-18, alpha -7.983, combined = 2.371e-14 rroots = 5[/code]

[QUOTE=ugly2dog;496519]I could use some help getting the poly for the C180 from Aliquot sequence 2005020:I15072
[CODE]657857447165656601784004259210135695409068624588693622916677467487770104472901746866567424698390609356924158281881356137299107130591692710506766053407258669595835073358574337876123
[/CODE][/QUOTE]

Here's my best result:
[code]# norm 1.635552e-17 alpha -8.063617 e 8.587e-14 rroots 3
skew: 23309801.83
c0: 1018924952279106740934167416432514793071291
c1: -3644767572355533243762444526659714639
c2: 139134541115529130759266542267
c3: 6215120000822875908111
c4: 42145973950466
c5: 6807480
Y0: -39539309826074731576656201986573118
Y1: 34971690790146803
[/code]
Sorry it took so long!

C180 poly
 

[QUOTE=VBCurtis;497716]Here's my best result:
[code]# norm 1.635552e-17 alpha -8.063617 e 8.587e-14 rroots 3
skew: 23309801.83
c0: 1018924952279106740934167416432514793071291
c1: -3644767572355533243762444526659714639
c2: 139134541115529130759266542267
c3: 6215120000822875908111
c4: 42145973950466
c5: 6807480
Y0: -39539309826074731576656201986573118
Y1: 34971690790146803
[/code]Sorry it took so long![/QUOTE]
Or even better :stirpot:
[code]
Y0: -39539309826077566836543631558332737
Y1: 69943381580293606
c0: 164416048929067330830905054491715174686320
c1: -916801304304310848593529943481908338
c2: 68812265839337486577597658621
c3: 6201899842816686797239
c4: 78772919640532
c5: 27229920
skew: 11669469.90
# size 1.353e-17, alpha -8.064, combined = 8.661e-14 rroots = 3[/code]

C189
 

[QUOTE=swellman;497458]I’m currently searching 1-2M, but do not know of anyone else working this C189. Test sieving has convinced me [url=https://www.mersenneforum.org/showpost.php?p=497027&postcount=1537]the best poly so far was found by you with spin from Max[/url]. And its e-score of 2.468e-14 is in the anticipated range of msieve for a GNFS 189 job.

It seems a straight -a job with 2LPs on each side. Additional test sieving with 3LPs were not fruitful. Not sure how much better we can get. Willing to stop after my current search range, but I can keep going if anyone thinks it’s worthwhile. To my knowledge, 6M is the upper search limit to date. Thanks to firejuggler and RichD for their efforts on this composite to date.[/QUOTE]

Finished 1-2M, nothing above a 2.14 handle. Anybody interested in continuing the search? I think 2.468 is a decent enough score.