C179 Poly
 

I'll start at 4M.

C179
 

The [url=https://www.mersenneforum.org/showpost.php?p=503952&postcount=134]top score[/url] for a C179 is 1.226e-13. I will report anything above 1e-13.

Eta: Best poly so far had a very unimpressive 8-handle.

C179 Poly
 

The best in the 4M range was 8.0. Continuing with 5M.

C179
 

Slightly better with an 8.1 in the 5M range. Continuing with 6M.

[CODE]# norm 1.773481e-17 alpha -7.401255 e 8.847e-14 rroots 5
skew: 40647429.83
c0: -18595888596752473177165527758317903718329125
c1: 1059949905692221719571614352991024280
c2: 392078004850643944894698126859
c3: 4556416357333536663008
c4: -249788702485670
c5: 472056
Y0: -42167478289890691142116552045704416
Y1: 32870750612783513
[/CODE]

Best poly I found in 0-2M per msieve-GPU. Maybe it can be spun, but likely nowhere near enough.

Searching 2-4M next. Also giving CADO a try.

The essential change to default params for CADO poly searches is to use nq=5^6 = 15625, rather than default 5^5 = 3125.
It's possible 5^7 = 78125 is better yet, I haven't experimented enough yet.
Edit: Search time is linear in nq, so this will take 5x longer than default. Reducing admax is wise, but user discretion.

C179 Poly
 

Still can't reach the bottom baseline. Continuing with 7M range.
[CODE]R0: -24741249053470004438219697698619541
R1: 226079261790988943
A0: 2152923289452829795026397093503954308214840
A1: 906820272218650478206589559652613616
A2: -93390438080236902856198560840
A3: -7293261983756385180071
A4: 293986866487826
A5: 6788496
skew 18475609.33, size 1.433e-17, alpha -6.755, combined = 8.836e-14 rroots = 5
[/CODE]

C179 Poly
 

FWIW, the second best.
[CODE]R0: -24987693698702075254348067265644565
R1: 172231128369965383
A0: -50419592101198480310780901572126814289657048
A1: 9740807826328463118506156299719068348
A2: 505327805862328112441986143930
A3: -34184832538254122038085
A4: -537448637663882
A5: 6460272
skew 33292697.09, size 1.412e-17, alpha -8.022, combined = 8.678e-14 rroots = 5
[/CODE]

C179
 

Currently searching 2-4M, should have results this weekend.

Shifting my focus to CADO - it’s searching now. Hoping to get a poly by this weekend, as the search space was limited < 200K. Kind of curious to see how CADO compares to msieve on a C179. Hoping to try a few variations on a couple of the parameters.

C179 Poly
 

Slightly better. Continuing with 8M.
[CODE]R0: -24072095668185497587750658027965575
R1: 82054100518914191
A0: 15048522563377264495445178085842295992994456
A1: 788071549401826285185191715096496830
A2: -169693031484058324571175089342
A3: -22022540312474255104209
A4: 214330489212070
A5: 7785960
skew 27437684.24, size 1.461e-17, alpha -7.830, combined = 8.930e-14 rroots = 3[/CODE]

C179 polys
 

None of the 4 polys above seems to spin up, sorry.