Reserved for MF - Sequence 4788 - Page 73

Andi47 · 2010-02-12, 17:10

Quote:

Originally Posted by Batalov

Now a c153.

ECM anyone?

P-1: B1=1e9, B2=1e14, no factor.

ECM: I have queued 1000@11e6 this morning (=12 hours ago), no factor so far after ~420 curves.

Andi47 · 2010-02-12, 21:05

P+1: 3* B1=1e9, B2=1e14, no factor.

Joshua2 · 2010-02-12, 22:51

running coeff 60-2400 poly search just in case, we should prob do some more ecm though. upon 2nd thought not right now it slows my comp too much

Joshua2 · 2010-02-13, 02:55

i tried running msieve -np 1,100 and it took 13 minutes and after lots of:
poly 0 p 226547647 q 237869767 coeff 53888836006288249 it said:
error generating or reading NFS polynomials

jrk · 2010-02-13, 03:08

Quote:

Originally Posted by Joshua2

i tried running msieve -np 1,100 and it took 13 minutes and after lots of:
poly 0 p 226547647 q 237869767 coeff 53888836006288249 it said:
error generating or reading NFS polynomials

First, msieve needs to batch the a5 values for it to work efficiently. Using a range from 1 to 100 will test only a single a5=60 (a5's are multiples of 60 in msieve). The default is to batch 40 a5's together so it would cover a range of 2400.

Secondly, it's been noticed that the internal parameters which msieve use are not very good for c153 and need a little adjustment. See the thread: bad parameters for 153-digit CPU polsel ?

If you are able to build msieve yourself, you can try adjusting the line for c152 and c153 parameters (both, since this number is between those) in poly_skew.c like fivemack suggested, multiplying the stage2 bounds by 2 and the final bounds by 2/3.

Batalov · 2010-02-13, 03:24

First, it needs ~3-4K curves at 11e6. Then, let's try our best.

I will try cover a small chunk of the poly search space with -np 24000,28800

jrk · 2010-02-13, 03:33

Quote:

Originally Posted by Batalov

I will try cover a small chunk of the poly search space with -np 24000,28800

I will try as well; reserving -np 48060,60000.

Andi47 · 2010-02-13, 06:35

162 more curves at B1=11e6 (total 582), no factor.

ECM anyone?? If I do this alone, it would take a week or so...

schickel · 2010-02-13, 06:54

Quote:

Originally Posted by Andi47

162 more curves at B1=11e6 (total 582), no factor.

ECM anyone?? If I do this alone, it would take a week or so...

I've got some curves running. Unfortunately, I've got a c129 & a c133 occupying my two fastest systems....

frmky · 2010-02-13, 08:02

I've done 600 curves at B1=11e7, which basically completes testing for 45 digit factors. I'll leave it running overnight, which will complete about half of t50. I suggest you move to either B1=43e6 or 11e7.

schickel · 2010-02-13, 08:11

Quote:

Originally Posted by frmky

I've done 600 curves at B1=11e7, which basically completes testing for 45 digit factors. I'll leave it running overnight, which will complete about half of t50. I suggest you move to either B1=43e6 or 11e7.

I can probably get ~30 curves an hour @ 43M. I'll leave it running overnight and see where we're at tomorrow.....

2010-02-12, 22:51	#795
Joshua2 Sep 2004 13·41 Posts	running coeff 60-2400 poly search just in case, we should prob do some more ecm though. upon 2nd thought not right now it slows my comp too much Last fiddled with by Joshua2 on 2010-02-12 at 23:02

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2010-02-12, 21:05	#794
Andi47 Oct 2004 Austria 4662₈ Posts	P+1: 3* B1=1e9, B2=1e14, no factor.

2010-02-13, 02:55	#796
Joshua2 Sep 2004 13×41 Posts	i tried running msieve -np 1,100 and it took 13 minutes and after lots of: poly 0 p 226547647 q 237869767 coeff 53888836006288249 it said: error generating or reading NFS polynomials

2010-02-13, 03:24	#798
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 9,497 Posts	First, it needs ~3-4K curves at 11e6. Then, let's try our best. I will try cover a small chunk of the poly search space with -np 24000,28800

2010-02-13, 06:35	#800
Andi47 Oct 2004 Austria 2×17×73 Posts	162 more curves at B1=11e6 (total 582), no factor. ECM anyone?? If I do this alone, it would take a week or so...

2010-02-13, 08:02	#802
frmky Jul 2003 So Cal 2×1,061 Posts	I've done 600 curves at B1=11e7, which basically completes testing for 45 digit factors. I'll leave it running overnight, which will complete about half of t50. I suggest you move to either B1=43e6 or 11e7.