Discussions - Mersenneplustwo

WEP-M+2/M+2 Project loss of internet connection

Hello crunchers! I regret to inform you that as of late this Wednesday morning (8th October) I/we have been without our main (broadband) internet connection (I am posting this from a backup, dial-up connection). It may just be coincidence, but there is some major roadworks (replacing a water main with plastic pipe) going on right outside atm.... more »

By bearnol - Oct 8 - 2 new of 2 messages

	2*18-digit factors of (M+2)43112609 by trial-factoring
	tiggatoo:~/math/tfc james$ time ./mpptf16 -P43112609 -S1 - T10000000000 1 86225219 61 5259738299 69 5949540043 144772 12482997260297 5259738360 453522086713962481 5949540112 513000393156944417 By bearnol - Sep 17 - 1 new of 1 message

	Fish!!
	Congratulations once again to the GIMPS project, who have just released details of their new primes: [link] This, of course, means new ponds! :) - and there's fish already... [website updated today] J By bearnol - Sep 16 - 1 new of 1 message

	21-digit factor of general number by WE, in seconds...
	...shows the WE algorithm can work spectacularly well, at least _sometimes_! A while ago, while experimenting with the WE algorithm (actually running as part of superfac9), I came across this particular combination of primes into a semiprime, after a dozen or so attempts, which yields an 11-digit factor by WE almost instantly:... more » By bearnol - Aug 29 - 2 new of 2 messages

	21-digit factor of (M+2)3021377 by mprime(OSX)
	Just noticed this on Lenny (the MacBook)... update to website to follow: [Tue Apr 8 00:34:45 2008] ECM found a factor in curve #82, stage #2 Sigma=1798474291860981, B1=50000, B2=5000000. 2^3021377+1 has a factor: 510207862179110491801 By bearnol - Apr 10 - 1 new of 1 message

	Another possibly good indication...
	Lenny:wec james$ time ./factorize3.gmp -P1257787 -T1 3 P1257787 T1 20124593 base=2615168526332661693465858 981504019713 real 70462m29.049s user 58398m41.613s sys 846m42.452s So WEP found the 8-digit factor in just _one_ iteration. [and yes, it really did just finish today :)] The only snag being it takes several... more » By bearnol - Dec 25 2007 - 1 new of 1 message

	21-digit factor of (M+2)1257787 by mprime(OSX)
	[Wed Nov 28 22:47:33 2007] ECM found a factor in curve #78, stage #1 Sigma=8980558820546872, B1=50000, B2=5000000. 2^1257787+1 has a factor: 900228597258955415819 By bearnol - Nov 29 2007 - 3 new of 3 messages

	New BLOG
	One final (!) point for today... I don't know how long I'll be able to keep it going with new stuff, but I've started a 'Factorization' Blog, over at: [link] J By bearnol - Sep 22 2007 - 1 new of 1 message

	superfac9.java
	// <XMP> // Elliptic Curve Method (ECM) Prime Factorization // // Written by Dario Alejandro Alpern (Buenos Aires - Argentina) // Last updated October 16th, 2003. See [link] // // Based in Yuji Kida's implementation for UBASIC interpreter // // No part of this code can be used for commercial purposes without... more » By bearnol - Sep 22 2007 - 3 new of 3 messages

	project out of work?
	No work? By zombie67 - Aug 28 2007 - 6 new of 6 messages