Reserved for MF - Sequence 4788 - Page 63

Andi47 · 2009-12-28, 15:08

Quote:

Originally Posted by unconnected

c137 seems ready for gnfs

Hmmmm... on my C2D CPU, poly selection would take ~45 hours, and I have no suitable GPU available.

Anyone with a suitable GPU for poly selection?

jrk · 2009-12-28, 17:35

Quote:

Originally Posted by Andi47

Anyone with a suitable GPU for poly selection?

I will run it for about a day.

Andi47 · 2009-12-28, 21:22

2000 more curves at B1=11e6 done, no factor.

jrk · 2009-12-28, 21:23

3e-11 is a good score for this number so I am stopping the poly search.

Code:

n: 40749881176591001313668881738461183359103092070283580604476483864940722559707999223166066411471564908270442953165453791845420594628304571
# norm 3.030638e-13 alpha -7.007098 e 3.019e-11
skew: 412205.21
c0:  75928063558542655529864860597168
c1: -9182525920185050132113778204
c2: -16139511119661987272384
c3:  39176187555574241
c4: -418654113212
c5:  182160
Y0: -186181968602879312631151995
Y1:  2753343120517687
rlim: 10000000
alim: 10000000
lpbr: 28
lpba: 28
mfbr: 56
mfba: 56
rlambda: 2.5
alambda: 2.5

Sieve with 13e from Q=5M to Q=20M.

bsquared · 2009-12-29, 14:08

Quote:

Originally Posted by jrk

3e-11 is a good score for this number so I am stopping the poly search.

Code:

n: 40749881176591001313668881738461183359103092070283580604476483864940722559707999223166066411471564908270442953165453791845420594628304571
# norm 3.030638e-13 alpha -7.007098 e 3.019e-11
skew: 412205.21
c0:  75928063558542655529864860597168
c1: -9182525920185050132113778204
c2: -16139511119661987272384
c3:  39176187555574241
c4: -418654113212
c5:  182160
Y0: -186181968602879312631151995
Y1:  2753343120517687
rlim: 10000000
alim: 10000000
lpbr: 28
lpba: 28
mfbr: 56
mfba: 56
rlambda: 2.5
alambda: 2.5

Sieve with 13e from Q=5M to Q=20M.

I'll take this one. Thanks jrk!
Should have factors tomorrow.

bsquared · 2009-12-30, 14:40

Sieving and the linear algebra took about 8 hours, but I had to sleep on the square root after it crashed in msieve version 1.44. An older version of msieve (1.42) completed the factorization.

Code:

prp60 factor: 345904004092746503021088299379972074287902300978671971758577
prp78 factor: 117806907969948860631659379351218221407555470977030568931916016398691505794923

Not in the DB yet, as it seems to be down.

Andi47 · 2009-12-30, 15:40

we have now:

Code:

 2503 .	 808886594947726621282095520538896991785158434207928622397291049220050736659063085072317728306298140197957084074798571909500231026289846129585304254688751713488420903230048 = 2^5 * 307 * 30851 * 65494328231336658101893937 * 345904004092746503021088299379972074287902300978671971758577 * 117806907969948860631659379351218221407555470977030568931916016398691505794923

next line is 2^5*5*237607*c164

Code:

c164 = 
20749808444920651088836221175319622037091694930266016549531551542740256020430353524980386079961335210514035950464022091006985460208334279424796425621787622208130087

(not yet in the DB as it's still down)

10metreh · 2009-12-30, 17:07

Will throw some 1e6 curves at the c164.

henryzz · 2009-12-30, 17:26

i am doing p-1 to 1e10

Andi47 · 2009-12-30, 17:31

Quote:

Originally Posted by henryzz

i am doing p-1 to 1e10

Which B2?

henryzz · 2009-12-30, 18:01

Quote:

Originally Posted by Andi47

Which B2?

dunno havent decided yet
at least the standard B2 for a B1 of 1e9
as much as i can fit in memory for first go i expect
i might do extend my original run of stage 2 though
considering how much ecm we do on the larger candidates i think we dont do enough p-1

2009-12-30, 14:40	#688
bsquared "Ben" Feb 2007 2²×3×293 Posts	Sieving and the linear algebra took about 8 hours, but I had to sleep on the square root after it crashed in msieve version 1.44. An older version of msieve (1.42) completed the factorization. Code: prp60 factor: 345904004092746503021088299379972074287902300978671971758577 prp78 factor: 117806907969948860631659379351218221407555470977030568931916016398691505794923 Not in the DB yet, as it seems to be down.

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2009-12-28, 21:22	#685
Andi47 Oct 2004 Austria 2·17·73 Posts	2000 more curves at B1=11e6 done, no factor.

2009-12-30, 17:07	#690
10metreh Nov 2008 2×3³×43 Posts	Will throw some 1e6 curves at the c164.

2009-12-30, 17:26	#691
henryzz Just call me Henry "David" Sep 2007 Cambridge (GMT/BST) 2×3³×109 Posts	i am doing p-1 to 1e10