Reserved for MF - Sequence 4788 - Page 224

ryanp · 2016-04-27, 04:12

Thought I'd try giving this some ECM, and found:

Code:

********** Factor found in step 2: 58504187312033426783937089348158383891551824971250202530619
Found probable prime factor of 59 digits: 58504187312033426783937089348158383891551824971250202530619
Composite cofactor 1807062924629097298443690521212788718205381130882626544320148370821147507418603191432294253211449561997233820401588086608411757973724521 has 136 digits

VBCurtis · 2016-04-27, 04:42

I am now prepared to handle the matrix for this!!!!

Thanks, Ryan!

unconnected · 2016-04-27, 06:44

WOW!

BTW, what B1 was used for this?

ryanp · 2016-04-27, 07:09

Quote:

Originally Posted by VBCurtis

I am now prepared to handle the matrix for this!!!!

Thanks, Ryan!

I'll spare you the trouble...

Code:

Wed Apr 27 00:08:30 2016  prp63 factor: 584775484621355384587447640679136598622765183913655518547655269
Wed Apr 27 00:08:30 2016  prp73 factor: 3090182424113039270065503929095662680218231005612731404992737669195465909

Dubslow · 2016-04-27, 07:52

Man, that's two large ones in a row that *nearly* made it to NFS... if I'd spend all my time on CADO on ECM instead...

swellman · 2016-04-27, 19:47

Nice hit RyanP!

Good to see you again, hope you can stick around. Check out the bottom of http://www.mersenneforum.org/showthr...=20024&page=46. Did anything ever come from those big jobs?

VBCurtis · 2016-04-28, 05:37

I've finished a T40 (300 curves at B1 = 21M) on the C180 from the next line.
I'll add some curves at 34M overnight, then move to 60M tomorrow since others are likely doing some ECM on this too.

Dubslow · 2016-04-28, 05:48

I've done 888 curves at 43M and intend to continue through the ~7k for a t50.

ryanp · 2016-04-29, 16:04

Quote:

Originally Posted by Dubslow

I've done 888 curves at 43M and intend to continue through the ~7k for a t50.

Save your cycles -- I expect to have this one done by GNFS later today. Stay tuned...

VBCurtis · 2016-04-29, 20:42

Even allowing for 500+ cores for sieving, it boggles the mind to imagine doing the sieve and matrix for a GNFS180 in 72 hrs.

It's nice to see you posting directly once again, sir. Welcome back!

ryanp · 2016-04-30, 02:40

Thanks. :)

Long square root phase, but here we have it:

Code:

Fri Apr 29 19:10:35 2016  prp78 factor: 144627802025961763976419354552926309281761047936149821764238780170955998664361
Fri Apr 29 19:10:35 2016  prp103 factor: 1556857813225187409870609737072643125460409111006918686481624578670231867626844762827246448671560826769

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2016-04-27, 04:42	#2455
VBCurtis "Curtis" Feb 2005 Riverside, CA 2·2,437 Posts	I am now prepared to handle the matrix for this!!!! Thanks, Ryan!

2016-04-27, 06:44	#2456
unconnected May 2009 Russia, Moscow 2,593 Posts	WOW! BTW, what B1 was used for this?

2016-04-27, 07:52	#2458
Dubslow Basketry That Evening! "Bunslow the Bold" Jun 2011 40<A<43 -89<O<-88 1C35₁₆ Posts	Man, that's two large ones in a row that nearly made it to NFS... if I'd spend all my time on CADO on ECM instead...

2016-04-27, 19:47	#2459
swellman Jun 2012 2²·773 Posts	Nice hit RyanP! Good to see you again, hope you can stick around. Check out the bottom of http://www.mersenneforum.org/showthr...=20024&page=46. Did anything ever come from those big jobs?

2016-04-28, 05:37	#2460
VBCurtis "Curtis" Feb 2005 Riverside, CA 2×2,437 Posts	I've finished a T40 (300 curves at B1 = 21M) on the C180 from the next line. I'll add some curves at 34M overnight, then move to 60M tomorrow since others are likely doing some ECM on this too.

2016-04-28, 05:48	#2461
Dubslow Basketry That Evening! "Bunslow the Bold" Jun 2011 40<A<43 -89<O<-88 3×29×83 Posts	I've done 888 curves at 43M and intend to continue through the ~7k for a t50.

2016-04-29, 20:42	#2463
VBCurtis "Curtis" Feb 2005 Riverside, CA 2×2,437 Posts	Even allowing for 500+ cores for sieving, it boggles the mind to imagine doing the sieve and matrix for a GNFS180 in 72 hrs. It's nice to see you posting directly once again, sir. Welcome back!