if i can find a good snfs poly for sigma(293459^28) i would like to reserve it:smile:

[quote=henryzz;205808]if i can find a good snfs poly for sigma(293459^28) i would like to reserve it:smile:[/quote]

I came up with:
[code]# sigma(293459^28) = 12239 * 99761 * 1753164483564713 * (C129) 576501205199187172515571885031916742894948015664001084125926570588388534895194026389497962449915683852865012722384633633975667743
# sigma(293459^28)=(293459^29-1)/(293459-1)
name: o293459
n: 576501205199187172515571885031916742894948015664001084125926570588388534895194026389497962449915683852865012722384633633975667743
type snfs
c5: 1:
c0: -293459
m: 638681886998442927448669513893241
[/code]
But I havn't tested it. It's really 293459^30-293459.

You are welcome to use it if you want.

Chris K

[quote=chris2be8;205804]
fivemack: will do 230329301^17-1
That looks a good candidate for an inverted octic.[/quote]
No, actually, it isn't; very small. We save a^2 in size, but we pay with an awkward poly.

In fact, the earlier one (that was done by Andy47) was bigger and still was slower than a sextic, but it was fun, wasn't it? I think octics like fugu should be tried once. :rolleyes:

[quote=chris2be8;205810]I came up with:
[code]# sigma(293459^28) = 12239 * 99761 * 1753164483564713 * (C129) 576501205199187172515571885031916742894948015664001084125926570588388534895194026389497962449915683852865012722384633633975667743
# sigma(293459^28)=(293459^29-1)/(293459-1)
name: o293459
n: 576501205199187172515571885031916742894948015664001084125926570588388534895194026389497962449915683852865012722384633633975667743
type[COLOR=Red]:[/COLOR] snfs
c5: 1:
c0: -293459
m: 638681886998442927448669513893241
[/code]But I havn't tested it. It's really 293459^30-293459.

You are welcome to use it if you want.

Chris K[/quote]
I had just come up with that:) but hadn't got it working.
Why would your poly work(after adding the colon after type:smile:) but not mine?
Mine was [code]name: oddperfect
n: 576501205199187172515571885031916742894948015664001084125926570588388534895194026389497962449915683852865012722384633633975667743
skew: 1
c5: 1
c0: -293459
Y0: 638681886998442927448669513893241
Y1: -1
m: 638681886998442927448669513893241
type: snfs[/code]

1. You don't need m if you've got Y1 and Y0.
2. Y1 should be 1 not -1 and Y0 should be -638...241 not 638...241.

[QUOTE=10metreh;205840]2. Y1 should be 1 not -1 and Y0 should be -638...241 not 638...241.[/QUOTE]

Doesn't matter. In fact, (-1,m) is preferred as it generates positive values.

EDIT:- BTW, skew 1 is not optimal. Try 12.4 [(c0/c5)^(1/5)]

[QUOTE=Batalov;205816]In fact, the earlier one (that was done by Andy47) was bigger and still was slower than a sextic, but it was fun, wasn't it? I think octics like fugu should be tried once. :rolleyes:[/QUOTE]

Yes, it was fun, although the air was getting quite thin at the end (low yield and high duplication rate above Q=40M)

BTW: I prefer octics over fugu - at least on octics I don't die when something goes wrong. ;)

I'll do (55333^31-1)/(55333-1) (best claim it before someone else does).

r1=159726141793022810621924099546455232666056367613804679 (pp54)
2=36622659456830964348916869325652764302975835683696978857412740911614541845551 (pp77)

Chris K

230329301,17:

prp59 factor: 13824804872696993811065376337183866782693185313257164248623
prp76 factor: 4538663921315131963423939531090913870428236174404213029266450647612697253279

[QUOTE=Pascal Ochem;205687]___sigma(P122^2) = 3 * 7 * 19 * 73 * 2917 * [COLOR="green"]60814598426346641491 * (C216)[/COLOR] /* both 7 and 19 are supposed to be forbidden at this point */[/quote]B1:250000 sigma: 927076052

208124989,16

r1=50901327102841204345505636512379951856310669988059537717 (pp56)
r2=12228379127756883905256831709271339086082775304057748289221001235862551 (pp71)