mersenneforum.org Reserved for MF - Sequence 3408
 User Name Remember Me? Password
 Register FAQ Search Today's Posts Mark Forums Read

 2016-10-15, 05:19 #364 LaurV Romulan Interpreter     Jun 2011 Thailand 2·19·241 Posts yeah, and the graphic looks like it is taking off...
 2016-10-15, 14:37 #365 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 2·32·197 Posts And, this c193 doesn't look like anything I could factor easily, either. I have gotten this far: Code:  100 curves with B1 = 3.0e6 100 curves with B1 = 11.0e6 100 curves with B1 = 43.0e6 2950 curves with B1 = 110.0e6
 2016-10-17, 01:52 #366 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 67328 Posts I was doing some rewriting of some of my scripts because I noticed the output of the current ecm.py was different from the previous version I was using. Look what I missed (for over a day) until now: Code: Sat 2016/10/15 21:19:39 UTC Input number is 1078463040366178656513252069998372090413256075931238262978888504124259070814620248149829075144468079639889184988709479197684315697845414761896628106730638913843128410641236087479218230479393449 (193 digits) Sat 2016/10/15 21:19:39 UTC Run 8 out of 20: Sat 2016/10/15 21:19:39 UTC Using B1=110000000, B2=776278396540, polynomial Dickson(30), sigma=1:395501120 Sat 2016/10/15 21:19:39 UTC Step 1 took 424103ms Sat 2016/10/15 21:19:39 UTC Step 2 took 166986ms Sat 2016/10/15 21:19:39 UTC ********** Factor found in step 2: 32527652508015991688135353490624137200476491466810293 Sat 2016/10/15 21:19:39 UTC Found prime factor of 53 digits: 32527652508015991688135353490624137200476491466810293 Sat 2016/10/15 21:19:39 UTC Prime cofactor 33155268124572048438133784781669020585809197372591704083430677812985365877497549554655661184724402184424723745171751999724006991866553283493 has 140 digits
 2016-10-17, 04:03 #367 schickel     "Frank <^>" Dec 2004 CDP Janesville 2·1,061 Posts Ooh, nice catch!
 2016-10-22, 20:40 #368 unconnected     May 2009 Russia, Moscow 32×281 Posts Next blocker is c191, I've completed ECM up to t45 and 1000@43e6 on it.
2016-10-22, 20:45   #369
EdH

"Ed Hall"
Dec 2009
Adirondack Mtns

354610 Posts

Quote:
 Originally Posted by unconnected Next blocker is c191, I've completed ECM up to t45 and 1000@43e6 on it.
I've currently got this much on it, as well:
Code:
  240 @ 2e3
370 @ 11e3
749 @ 5e4
214 @ 25e4
120 @ 1e6
200 @ 3e6
100 @ 11e6
100 @ 43e6
4620 @ 11e7
1680 @ 85e7

 2016-10-23, 00:52 #370 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 2·32·197 Posts With unconnected and mine, are we about at t55? Are we looking at needing t60? If the above, are we close enough to send for a poly yet?
 2016-10-23, 01:18 #371 VBCurtis     "Curtis" Feb 2005 Riverside, CA 110218 Posts Yes, I believe you're at roughly a t55. Using the old rule of thumb 0.31*size = t58 = 50% of a t60 = 3 * t55 is enough for GNFS 191, but the Bayesian tool should ask for quite a bit less. Perhaps another 1000-1500 at 85e7 and call it good? I can start poly select Tuesday, but I only have a few GPU-days free. A c191 deserves something like a GPU-month, feasible among the 3-5 likely forum folks who do poly select. If you do a poly select run, please post your ranges/parameters searched; I reduce stage 1 norm far enough that msieve does NOT search just a slice, so I am likely to overlap work others do. Since a few folks like to search tiny A1, I'll start at 5M to reduce the chance of overlap.
2016-10-23, 03:03   #372
EdH

"Ed Hall"
Dec 2009
Adirondack Mtns

2·32·197 Posts

Quote:
 Originally Posted by VBCurtis Yes, I believe you're at roughly a t55. Using the old rule of thumb 0.31*size = t58 = 50% of a t60 = 3 * t55 is enough for GNFS 191, but the Bayesian tool should ask for quite a bit less. Perhaps another 1000-1500 at 85e7 and call it good?
Actually, it wants:
Code:
 4200 curves with B1 = 850.0e6
4500 curves with B1 =   2.9e9
That will take a while to run, but I didn't know the comparison to your estimate for a poly, which is why I asked.

Quote:
 Originally Posted by VBCurtis I can start poly select Tuesday, but I only have a few GPU-days free. A c191 deserves something like a GPU-month, feasible among the 3-5 likely forum folks who do poly select. If you do a poly select run, please post your ranges/parameters searched; I reduce stage 1 norm far enough that msieve does NOT search just a slice, so I am likely to overlap work others do. Since a few folks like to search tiny A1, I'll start at 5M to reduce the chance of overlap.
This one looks like a true team effort. We might be over my head considerably and I'm not that short...

 2016-10-23, 04:48 #373 VBCurtis     "Curtis" Feb 2005 Riverside, CA 53·37 Posts I'll contribute 500 @ 85e7 this week, and I'll wait until you're doing the 3e9 curves before starting poly select. You're not yet halfway through ECM, by either the old rule of thumb or the new tool (interesting the new tool asks for so much ECM!).
2016-10-23, 12:58   #374
EdH

"Ed Hall"
Dec 2009
Adirondack Mtns

2×32×197 Posts

Quote:
 Originally Posted by VBCurtis I'll contribute 500 @ 85e7 this week, and I'll wait until you're doing the 3e9 curves before starting poly select. You're not yet halfway through ECM, by either the old rule of thumb or the new tool (interesting the new tool asks for so much ECM!).
Thanks! It doesn't suggest much in the low end though:
Code:
  100 curves with B1 =   3.0e6
100 curves with B1 =  11.0e6
100 curves with B1 =  43.0e6
4500 curves with B1 = 110.0e6
4200 curves with B1 = 850.0e6
4500 curves with B1 =   2.9e9

 Thread Tools

 Similar Threads Thread Thread Starter Forum Replies Last Post schickel Aliquot Sequences 2934 2021-01-07 18:52 RichD Aliquot Sequences 463 2021-01-02 16:01 kar_bon Aliquot Sequences 127 2020-12-17 10:05 RichD Aliquot Sequences 14 2013-08-02 17:02 petrw1 Lone Mersenne Hunters 82 2010-01-11 01:57

All times are UTC. The time now is 14:42.

Mon Jan 25 14:42:31 UTC 2021 up 53 days, 10:53, 0 users, load averages: 2.53, 2.50, 2.44

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.