20180329, 05:06  #56 
"Curtis"
Feb 2005
Riverside, CA
2^{2}×13×89 Posts 
deg 6 alpha's are often much higher than deg 5; 2 units higher isn't unusual. I saw an 11 on deg 6 before I ever saw 9 on deg 5.
The polyrequestthread folks have this c205 in mind, but we won't get to it immediately. We should be ready to attack it not long after ECM is complete, but post here when ECM is done to remind us! 
20180408, 02:08  #57 
Sep 2008
Kansas
3×23×47 Posts 
C205 @ i2122

20181106, 10:30  #58 
May 2018
43 Posts 
Any news about this?

20181106, 15:09  #59 
"Curtis"
Feb 2005
Riverside, CA
2^{2}·13·89 Posts 
We have a poly, but before queueing it to NFS@home we ought to find someone willing to solve the matrix. The sieving can be done on 15e, but it's a stretch and would likely make the matrix 1020% harder to solve. If Greg accepts it for 16e queue, we may have an easier time finding a matrixsolving volunteer.
In the meantime, I've been hoping for C198C202 to show up to try on 15e, to better see how bad an idea this C205 would be. 
20181107, 00:08  #60  
(loop (#_fork))
Feb 2006
Cambridge, England
6,379 Posts 
Quote:
I would be willing to do the linear algebra for a 16e C205 job, I believe I can now handle up to 100M matrices in a season or so on my fastest machine. Last fiddled with by fivemack on 20181107 at 00:08 

20190620, 08:35  #61 
(loop (#_fork))
Feb 2006
Cambridge, England
6,379 Posts 
Code:
Wed Jun 12 19:50:29 2019 p91 factor: 8278645201610958157448234047232635214787903159941790455197521424384313149180486330194242291 Wed Jun 12 19:50:29 2019 p114 factor: 568390065286867694336797871265135854189476738272398080804318608179579930817418299256374912126897247709298839448337 Many thanks to Greg for arranging the sieving; log attached and at https://pastebin.com/TmBSR7Hw 
20190621, 15:26  #62 
"Ed Hall"
Dec 2009
Adirondack Mtns
2·3^{2}·197 Posts 
Is anyone running with this (c141)? I'm doing a few curves at 11e7 and then it will automatically move to CADONFS, unless someone else wants it...

20190622, 16:49  #63 
"Ed Hall"
Dec 2009
Adirondack Mtns
2·3^{2}·197 Posts 
I did some very light ECM on the c198, but some machine(s) in my ecmpi cluster wouldn't handle 11e7 curves...

20190622, 17:24  #64 
(loop (#_fork))
Feb 2006
Cambridge, England
6,379 Posts 
I have put one of my GTX1080 onto ECM for the C198 from step 2127; it will take about two days to run 1280 curves at B1=850M.

20190802, 18:31  #65 
Jun 2012
2·3·491 Posts 
C198 @i2127
Is anyone still working this?

20190927, 02:08  #66 
Sep 2008
Kansas
CAB_{16} Posts 
C198 @i2127
Should we send the remaining ECM work to yoyo?

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