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-   -   Reserved for MF - Sequence 4788 (https://www.mersenneforum.org/showthread.php?t=11615)

debrouxl 2012-04-11 17:34

600 (GMP-ECM stages 1 and 2) + 64 (GPU-ECM stage 1, GMP_ECM stage 2) @ B1=3e6 on the C99, NF.
I wanted to launch only 300 CPU curves, but I screwed up on the argument to the script...

bsquared 2012-04-11 17:44

Sorry, I did the C99.

I'm on the C118 now (actually - C98).

bsquared 2012-04-11 18:00

Done. I'll disappear back into the woodwork for awhile now. There's a easy c89 waiting for someone.

evandijk70 2012-04-11 18:02

Using B1=3000000, B2=3000000-5706890290, polynomial Dickson(6), sigma=2657438988
Step 1 took 9313ms
Step 2 took 4816ms
********** Factor found in step 2: 19361838294942830863612292556544597
Found probable prime factor of 35 digits: 19361838294942830863612292556544597
Probable prime cofactor 4474174784158986141273146393493891378884972832030329546192051603 has 64 digits

C89 now

edit: running siqs

Batalov 2012-04-11 18:13

i3010

firejuggler 2012-04-11 20:10

i3010:200@3e6

bsquared 2012-04-11 21:16

i3010:
+ 2500 @ 3e6
+ 1500 @ 11e6

Batalov 2012-04-11 21:21

+ 1500 @ 11e6

akruppa 2012-04-11 23:11

+1300@11M, P-1 1e10,1e16. Switching ECM to 44M.

jrk 2012-04-12 00:06

Isn't that enough ECM?

For the c140, the 13e siever is faster than 14e. Here's a poly:

(If RSALS wants to sieve it with 14e, then stop at Q=15M instead)
[code][color=blue]# sieve with ggnfs lasieve4 I13e on alg side from Q=5M to 26M[/color]
# est ~29M raw relations (avg. 0.029 sec/rel C2D @ 3.4GHz)
# aq4788:3010
n: 16625281901730370455071681055917159130395787481401452610520456476271085497806820213722749165335977787336736588553081897741511525160614380551
# norm 1.910642e-13 alpha -6.928618 e 2.341e-11 rroots 5
skew: 599508.87
c0: -427648226665491786635521697657856
c1: 33913973063579742417026172928
c2: 220112435082076467817398
c3: 9753763813104063
c4: -525233124596
c5: 229080
Y0: -591774861633948464998505215
Y1: 427418671945939
rlim: 7500000
alim: 15000000
lpbr: 28
lpba: 28
mfbr: 56
mfba: 56
rlambda: 2.5
alambda: 2.5
[/code]

Batalov 2012-04-12 00:09

Looks like enough ECM. Maybe
[CODE][COLOR=#0000ff]# sieve with ggnfs lasieve4 I13e on alg side from Q=5M to 26M[/COLOR]
# est ~29M raw relations (avg. 0.029 sec/rel C2D @ 3.4GHz)
# aq4788:3010
n: 16625281901730370455071681055917159130395787481401452610520456476271085497806820213722749165335977787336736588553081897741511525160614380551
type: gnfs
# norm 2.179122e-13 alpha -7.516537 e 2.538e-11 rroots 3
skew: 1228691.55
c0: -4776061894413561017372169558866655
c1: 68299881421366359321693869553
c2: -321819763373019765946931
c3: 131220470449050007
c4: 213277792786
c5: 26520
Y0: -910833582159552006771443128
Y1: 84903198921839
rlim: 7500000
alim: 15000000
lpbr: 28
lpba: 28
mfbr: 56
mfba: 56
rlambda: 2.5
alambda: 2.5[/CODE]


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