ECM work on 4788:i2617 c172

schickel · 2011-01-07, 10:39

After a lot of heavy lifting from bchaffin and Batalov, we have now come to a c172 on line 2617:

Code:

2229348552361822129355877431354933637944777944345113399577912185681707793442268713514615675586421258420770429669349552195250785917635169750211125857968489791489287723679679

Batalov finished "all" curves at 11M. Members of the Forum have been running curves at 43M and 110M. Here's the current count:

Code:

    Level    Count    Who
 11,000,000   5500    Batalov
 43,000,000    205    Andi_HB
 43,000,000    547    schickel
110,000,000     59    schickel
110,000,000    324    em99010pepe 
110,000,000     50    debrouxl
110,000,000  10400    bsquared
110,000,000   5010    Yoyo@home
260,000,000     50    debrouxl
260,000,000   2600    bsquared
260,000,000    116    em9901pepe
260,000,000   4770    Yoyo@home
260,000,000     10    Joshua2
850,000,000     10    Joshua2
850,000,000   5000    Yoyo@home

Here are the current P-1/P+1 levels:

Code:

Type    B1    B2    Who
P-1    1e11  1e17  Andi47

P+1x3  1e9   def.  Joshua2

Anyone care to run more P+/-1?

Are we going to be able to tackle this as a GNFS job? jrk has found a decent enough polynomial.

Mini-Geek · 2011-01-07, 13:49

I've done P-1 with B1=1e8, doing P-1 with B1=1e9, B2=205702371522480 (GMP-ECM default), will follow that with P+1 with B1=1e8. I'll just edit the first post with P-1/P+1 statuses, and we can update that if/when someone ups the bounds.

Batalov · 2011-01-07, 20:11

Quote:

Originally Posted by schickel

...Are we going to be willing/able to tackle this as a GNFS job?

It is surely doable - if RSALS (or NFS@Home) would be willing to help as they have in the past.
But a lot of ECM - first. Ask yoyo@home, too?

debrouxl · 2011-01-07, 21:04

50 curves at B1=26e7, no factor.

A C172 would certainly be over-demanding for the poor little 14e siever, so no dice for RSALS. IMO, 15e in NFS@Home would be a better bet...

Andi47 · 2011-01-08, 08:00

Quote:

Originally Posted by schickel

a c172

What should be our [ECM] target on this?

Hmmm... My guess is for t55 (or maybe a bit more?). Can any experienced ECMer confirm or correct this?

Andi_HB · 2011-01-08, 16:36

113 curves more at B1=43e6, no factor.

bsquared · 2011-01-08, 17:49

3200 curves at 110M done.

yoyo · 2011-01-09, 10:53

How many ecm curves are still needed at the different B1 levels:
3M:
11M:
43M:
110M:
260M:
850M:
I would start with the lowest on in yoyo@home and complete them.

yoyo

Batalov · 2011-01-09, 11:16

bsquared's 3200 curves at 110e6 make 43e6 curves unnecessary. Now,
~~11M: 4480~~
~~43M: 7553~~
110M: 17770-3200
And this will be a ~32% level (I'd say enough, but opinions differ)

yoyo · 2011-01-09, 12:27

I started to run 5000 curves on B1=110M.
yoyo

bsquared · 2011-01-09, 14:28

3200 more at 110M done.

2011-01-07, 10:39	#1
schickel "Frank <^>" Dec 2004 CDP Janesville 2×1,061 Posts	ECM work on 4788:i2617 c172 After a lot of heavy lifting from bchaffin and Batalov, we have now come to a c172 on line 2617: Code: 2229348552361822129355877431354933637944777944345113399577912185681707793442268713514615675586421258420770429669349552195250785917635169750211125857968489791489287723679679 Batalov finished "all" curves at 11M. Members of the Forum have been running curves at 43M and 110M. Here's the current count: Code: Level Count Who 11,000,000 5500 Batalov 43,000,000 205 Andi_HB 43,000,000 547 schickel 110,000,000 59 schickel 110,000,000 324 em99010pepe 110,000,000 50 debrouxl 110,000,000 10400 bsquared 110,000,000 5010 Yoyo@home 260,000,000 50 debrouxl 260,000,000 2600 bsquared 260,000,000 116 em9901pepe 260,000,000 4770 Yoyo@home 260,000,000 10 Joshua2 850,000,000 10 Joshua2 850,000,000 5000 Yoyo@home Here are the current P-1/P+1 levels: Code: Type B1 B2 Who P-1 1e11 1e17 Andi47 P+1x3 1e9 def. Joshua2 Anyone care to run more P+/-1? Are we going to be able to tackle this as a GNFS job? jrk has found a decent enough polynomial. Last fiddled with by Mini-Geek on 2011-01-22 at 15:01 Reason: Still boggling over 850M(!)

2011-01-09, 11:16	#9
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 10010100000101₂ Posts	bsquared's 3200 curves at 110e6 make 43e6 curves unnecessary. Now, ~~11M: 4480~~ ~~43M: 7553~~ 110M: 17770-3200 And this will be a ~32% level (I'd say enough, but opinions differ) Last fiddled with by Batalov on 2011-01-09 at 11:17

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2011-01-07, 13:49	#2
Mini-Geek Account Deleted "Tim Sorbera" Aug 2006 San Antonio, TX USA 17×251 Posts	I've done P-1 with B1=1e8, doing P-1 with B1=1e9, B2=205702371522480 (GMP-ECM default), will follow that with P+1 with B1=1e8. I'll just edit the first post with P-1/P+1 statuses, and we can update that if/when someone ups the bounds.

2011-01-07, 21:04	#4
debrouxl Sep 2009 977 Posts	50 curves at B1=26e7, no factor. A C172 would certainly be over-demanding for the poor little 14e siever, so no dice for RSALS. IMO, 15e in NFS@Home would be a better bet...

2011-01-08, 16:36	#6
Andi_HB Mar 2007 Germany 2³×3×11 Posts	113 curves more at B1=43e6, no factor.

2011-01-08, 17:49	#7
bsquared "Ben" Feb 2007 6671₈ Posts	3200 curves at 110M done.

2011-01-09, 10:53	#8
yoyo Oct 2006 Berlin, Germany 617 Posts	How many ecm curves are still needed at the different B1 levels: 3M: 11M: 43M: 110M: 260M: 850M: I would start with the lowest on in yoyo@home and complete them. yoyo

2011-01-09, 12:27	#10
yoyo Oct 2006 Berlin, Germany 617 Posts	I started to run 5000 curves on B1=110M. yoyo

2011-01-09, 14:28	#11
bsquared "Ben" Feb 2007 3×1,171 Posts	3200 more at 110M done.