Hmm... grrr... we [URL="http://factordb.com/sequences.php?se=1&aq=744313934763611816&action=range&fr=1514&to=1514"]should have insisted[/URL] with that ECM...

Pretty interesting that your matrix only took 10% of sieve time, even with such a low density. That P51 was right on the edge of "ECM miss" if you used 0.31*input for ECM effort, my sympathy.

C188
 

A fractionally better E-score to an already poor baseline. Continuing with 5-6M.
[CODE]R0: -1300500150807659655695606920925311277
R1: 2569646881667973587
A0: 1971441560760291426679085641317728614917657000
A1: 90515891824442551081282685971022781950
A2: -29116667002919793631588071243779
A3: 502783186113491533187210
A4: 5561759352795696
A5: 4984560
skew 72207503.73, size 2.031e-18, alpha -8.569, combined = 2.593e-14 rroots = 5[/CODE]

C188
 

Fractionally better of a poor score...
[CODE]R0: -1291184634990071575849413166061839469
R1: 488932253405006603
A0: 5295572727578954146865203854460188687287280
A1: 20563764412078668691199006815241096460
A2: -4602485669723502827227717513182
A3: -137691368151049455135524
A4: 2489423600697427
A5: 5166984
skew 40427336.06, size 2.043e-18, alpha -7.394, combined = 2.630e-14 rroots = 5[/CODE]

C188 Poly
 

[CODE]# norm 3.343861e-18 alpha -7.572896 e 3.275045e-14 rroots 3
skew: 98110230.51
c0: 675565795079904019155877127195861801648673504
c1: 4751041014896174135851741260094078732
c2: -3012537945628446533408455206946
c3: 13600311149275266763153
c4: 218294305919052
c5: 550800
Y0: -2020398261471684607571791990907427085
Y1: 14143750483104066991[/CODE]

C188
 

Nice find Gamarel! What range of c5 did you search?

I’m waiting for msieve to finish up -npr on 1M-2M.

eta: -npr finished with the embarrassing best score 2.454. Ugh. Searching 2-3M next.

[QUOTE=swellman;495240]Nice find Gamarel! What range of c5 did you search?
[/QUOTE]
I don't search ranges, just single c5.

I searched 428040, 542880, 550800, 554040, 590400 and a part of 439920 so far.

C188 polys
 

[QUOTE=Gimarel;495238][CODE]# norm 3.343861e-18 alpha -7.572896 e 3.275045e-14 rroots 3
skew: 98110230.51
c0: 675565795079904019155877127195861801648673504
c1: 4751041014896174135851741260094078732
c2: -3012537945628446533408455206946
c3: 13600311149275266763153
c4: 218294305919052
c5: 550800
Y0: -2020398261471684607571791990907427085
Y1: 14143750483104066991[/CODE][/QUOTE]
Some spin with different c5 on the above Gimarel's poly. Didn't beat it (yet) :-)
[code]
# norm 3.258848e-18 alpha -7.529761 e 3.273e-14 rroots 3
skew: 175018946.57
c0: 2503425038713596908406089376040302964538986662
c1: 104551944273417332575889349124262623993
c2: 625186997810259107980134098338
c3: -19319242705226991109007
c4: -24094492830474
c5: 137700
Y0: -4040796525680532021261076318377313310
Y1: 14143750483104066991
[/code]
[code]
# norm 3.347324e-18 alpha -6.759724 e 3.247e-14 rroots 5
skew: 46956629.64
c0: 46454994489550830598994195714544819609803352
c1: 13522232538955033166285181589464846678
c2: 908985745433643910978008342697
c3: -2624820925739608705775
c4: -318184833889896
c5: 2203200
Y0: -2020398263409834078822612849296609141
Y1: 28287500966208133982
[/code]

C196 poly
 

[QUOTE=Gimarel;493802]I have 3 different stage 1 hits, that produced a poly above 7e-17. The best polys for each stage 1 hit are:[CODE]# norm 3.768119e-19 alpha -7.174415 e 8.391e-15 rroots 5
skew: 344692012.75
c0: -564202157998984142887784858415029503603332553440
c1: 20471710419929056899196323634945502744172
c2: 1024852198685693258772746031309
c3: -366944012623409011230680
c4: -46283661662182
c5: 1277640
Y0: -93056380628397254230674038194182822521
Y1: 331483736214488911093
[/CODE][/QUOTE]
This Gimarel's poly spins into 9-handle :stirpot: (see below).

C196 poly
 

From msieve:
[code]
Y0: -186112761249275859990310809375758615456
Y1: 331483736214488911093
c0: -1127538215330670787839529420976076551079248430888
c1: 22787307783160256835131839177467065670668
c2: -22953311800064637103550016323751
c3: -367400356406864770958208
c4: 13082141053009
c5: 319410
skew: 487437153.82
# size 3.535e-19, alpha -8.055, combined = 9.257e-15 rroots = 5
[/code]

I'll test-sieve the C196 with this latest poly and get it posted to the 15e queue in the next day or two. Nice work!