I'll take C194_142_70 next.

I must abandon my reservation for 150^122+122^150 cofactor. I had put this on the back burner for a while, then honestly forgot about it for a bit. Since "rediscovering" my reservation I've spent days trying to get this into LA - to no avail. The memory on my biggest baddest machine seems to have degraded (guessing) and I can't process this number.

Planning to experiment with a few of the easier 32-bit jobs, but I from now on I won't reserve a NFS@Home factorization until I've successfully downloaded it and made it into LA.

With regards to 8-7_305 please read this:

[url]http://www.mersenneforum.org/showpost.php?p=447745&postcount=133[/url]

Release C194_142_70, I don't have machine to run this 32 bits tasks.

C169_3366_2156 completed - 68 hours for 8.9M matrix (TD=140).

[CODE]prp77 factor: 25641422047868541686986107525186596561936623541345083157292277889617899142993
prp93 factor: 236987675809269531923788288063277096288560787567038249028484779323136113755266916583339154863
[/CODE][URL]http://pastebin.com/kd8vPCqt[/URL]

C229_148_70 completed - 31 hours for 6.2M matrix (TD=150).

[CODE]prp59 factor: 31341865988592334418593864986093727905704570129434258989293
prp68 factor: 69427046440186584592164280112833479826741033494349863350321991599569
prp103 factor: 1038282752331259626425572544634440815688452884099890210062246681711726738973404015157301258187856223461
[/CODE][URL]http://pastebin.com/UaQJMdWi[/URL]

C237_127_93 (15e) factored.
 

[code]
p51 factor: 297202845182863447345374726482649007673631788341481
p186 factor: 970553391576387434074331675298844842908403605335927176431147146123005272518243346310346847152873192974135025815202444672862587723955494504862775228821614081191765437121091590734210514727
[/code]

Log: [url]http://pastebin.com/0QxTm8Fw[/url]

This is a pretty bad ECM miss. This number should have had more than a t55, which would make missing a p51 [I]very[/I] unlikely.

Trying C196_137_66 (14e).
8-7_305 needs more sieving per [URL]http://www.mersenneforum.org/showpost.php?p=447745&postcount=133[/URL]

[QUOTE=jyb;447859][code]
p51 factor: 297202845182863447345374726482649007673631788341481
p186 factor: 970553391576387434074331675298844842908403605335927176431147146123005272518243346310346847152873192974135025815202444672862587723955494504862775228821614081191765437121091590734210514727
[/code]

Log: [url]http://pastebin.com/0QxTm8Fw[/url]

This is a pretty bad ECM miss. This number should have had more than a t55, which would make missing a p51 [I]very[/I] unlikely.[/QUOTE]

It sustained a full t55 by yoyo@Home. An ECM miss, and an unfortunate one, but are you suggesting a SNFS 251 should have a partial t60 run prior to NFS?

[QUOTE=swellman;447862]It sustained a full t55 by yoyo@Home. An ECM miss, and an unfortunate one, but are you suggesting a SNFS 251 should have a partial t60 run prior to NFS?[/QUOTE]

Well that's a good question. The answer depends on whom you ask. If you follow the standard 2/9 rule for a composite with SNFS difficulty 253.05, then yes, it should have more than just a t55. OTOH, there are threads on this forum where that topic has been debated, with Bob Silverman in particular favoring earlier commencement of NFS. (Though he never articulated any better actual guideline than the 2/9 rule.)

I'll point out that even with just a t55, there's less than a 1% chance that the p51 factor would not have been found. So mostly my comment was intended as a query to verify that this really did receive the ECM work that it deserved.

C272_136_105 at last done (job queued 30/Aug/2016)
 

[code]
Sat Nov 26 18:55:26 2016 p133 factor: 6543705328400180561577911640580975478076882049636590514144600269097437013273310299121836093980225911815544821116466542927850009998397
Sat Nov 26 18:55:26 2016 p139 factor: 3693792848093521850768683089919709265366228631806734580057526850215427168910019282185675375281048261775975004394791990644572376727424390683
[/code]

1254 hours on 48 cores K10/1900 (2x4 grid of 6-thread jobs, on a single four-socket machine) for a 42.8M matrix at density 136; ETA at start was 834 hours, so I'm not sure why it took quite so long, I'd expected it to be done by Thanksgiving.

Log attached and at [url]http://pastebin.com/SGJee32t[/url]

Taking on swellman's reservation for C277_150_122; anticipating this will be another eight-week job.