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[/CODE]

I am now prepared to handle the matrix for this!!!! :brian-e: :flex:

Thanks, Ryan!

WOW! :bow:
BTW, what B1 was used for this?

[QUOTE=VBCurtis;432648]I am now prepared to handle the matrix for this!!!! :brian-e: :flex:

Thanks, Ryan![/QUOTE]

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[/CODE]

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...

Nice hit RyanP! :shock:

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

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.

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

[QUOTE=Dubslow;432701]I've done 888 curves at 43M and intend to continue through the ~7k for a t50.[/QUOTE]

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

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!

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[/CODE]