Reserved for MF - Sequence 4788

[jrk]

I've started polynomial selection.

[BigBrother]

Originally Posted by jrk

I've started polynomial selection.

I can do the sieving and postprocessing again, I love this teamwork!

jfk, what do you use for poly selection?

[debrouxl]

For polynomial selection, jrk uses (and contributes to) msieve.

[BigBrother]

Originally Posted by debrouxl

For polynomial selection, jrk uses (and contributes to) msieve.

I meant the hardware he uses.

[pinhodecarlos]

Originally Posted by BigBrother

I meant the hardware he uses.

Nvidia card.

[jrk]

Originally Posted by BigBrother

I can do the sieving and postprocessing again, I love this teamwork!

Here's a poly:

# aq4788:5073
# sieve with gnfs-lasieve4I14e on -a side from Q=7M to 29M
n: 29712030350422056407764987099112246876809290443496977616436205075052415484201116636430793917656509571664421538011459411836589836444181684355772841911
# norm 2.618315e-14 alpha -6.295424 e 7.663e-12 rroots 5
skew: 1166080.80
c0:  23750490127131804180671875097430105
c1:  665524504274009633437655504074
c2:  502177263538284124971913
c3: -940909512238674179
c4: -306611097123
c5:  296100
Y0: -39838125003638225433615547286
Y1:  46716866412058447
rlim: 14000000
alim: 14000000
lpbr: 29
lpba: 29
mfbr: 58
mfba: 58
rlambda: 2.55
alambda: 2.55

Originally Posted by BigBrother

jfk, what do you use for poly selection?

msieve on a GTX 570

[BigBrother]

Originally Posted by jrk

Here's a poly:

Thanks, I have started sieving.

Originally Posted by jrk

msieve on a GTX 570

That's a bigger gun than mine :)

[BigBrother]

Now at line 5078, I'm already sieving the c133.

[richs]

How does a 2^4 * 31 driver break?

[LaurV]

Originally Posted by richs

How does a 2^4 * 31 driver break?

the easiest way is when you succeed to raise 31 at ^2

[Dubslow]

Originally Posted by LaurV

the easiest way is when you succeed to raise 31 at ^2

Or any even power. Then the sequence is effectively class 4, which means it needs to the rest (besides 2^4*31^(2n)) needs to be a product of 4 primes or less, but that's not sufficient. (There are some restrictions on what each prime has to be mod 4 or mod 8 etc. Also, and other prime raised to an even power doesn't count against that 4.)