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2012-04-15, 02:23   #1706
schickel

"Frank <^>"
Dec 2004
CDP Janesville

2×1,061 Posts

Quote:
 Originally Posted by jrk One of my two ECM runs on line 3027 produced this gem: Code: Run 153 out of 2000: Using B1=10000000, B2=46842680440, polynomial Dickson(12), sigma=3536871957140198850 Step 1 took 27866ms Step 2 took 15738ms ********** Factor found in step 2: 5551206901172054583062351210595874081775416652238749 Found probable prime factor of 52 digits: 5551206901172054583062351210595874081775416652238749 Probable prime cofactor 129906928311090953880459217864523818071838252366190167685116209056556687270679 has 78 digits
Wow, I never get that lucky on my c130s!

[EDIT: It's also good to see that the downdriver is still alive (now, as long as the 5 doesn't add any digits); we're still golden....]

Last fiddled with by schickel on 2012-04-15 at 02:27 Reason: Rambling on

 2012-04-15, 08:55 #1707 Andi47     Oct 2004 Austria 2·17·73 Posts starting ECM @3e6 on alq4788.3033 c131
 2012-04-15, 09:02 #1708 debrouxl     Sep 2009 977 Posts 600 @ B1=3e6 on the C131, NF.
 2012-04-15, 10:39 #1709 mataje     Jan 2009 Bilbao, Spain 283 Posts 330 @ B1=3e6 on the C131, NF.
 2012-04-15, 13:26 #1710 akruppa     "Nancy" Aug 2002 Alexandria 2,467 Posts Found probable prime factor of 48 digits: 159450259206967402524996975215244611239608534557 Edit: starting NFS on c108 Last fiddled with by akruppa on 2012-04-15 at 13:53
 2012-04-15, 16:06 #1711 akruppa     "Nancy" Aug 2002 Alexandria 2,467 Posts It got factored.
 2012-04-15, 21:18 #1712 RichD     Sep 2008 Kansas 22×773 Posts i3041 has a C126 remaining .. and the 5 is gone! (total size down to 137)
 2012-04-15, 22:45 #1713 akruppa     "Nancy" Aug 2002 Alexandria 2,467 Posts Did 2400@3M, now doing 2k@11M on c126.
 2012-04-16, 12:29 #1714 rajula     "Tapio Rajala" Feb 2010 Finland 32×5×7 Posts I threw 1500@3M on the c121@i3044. (I could do NFS, but I would not be able to read the factors before tomorrow morning, so I'll leave it to someone else.) Last fiddled with by rajula on 2012-04-16 at 13:08
2012-04-16, 17:27   #1715
RobertS

Aug 2009
somewhere

3058 Posts

Quote:
 Originally Posted by rajula I threw 1500@3M on the c121@i3044. (I could do NFS, but I would not be able to read the factors before tomorrow morning, so I'll leave it to someone else.)
NFS:
PRP61 = 4261063551706376757731519359860876519277978869182669884472831
PRP60 = 541450378688037124823705235698592946874107589893049486011051

Now sieving c101@3045 ... done

Last fiddled with by RobertS on 2012-04-16 at 18:07

 2012-04-16, 17:35 #1716 firejuggler     Apr 2010 Over the rainbow 45438 Posts at this size, isn't it quicker to directly nfs?

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