[QUOTE=bchaffin;238769]The c138 is done, along with four more terms that fell pretty quickly (one with a 45-digit ecm factor, that was nice). The last few terms have grown quickly with 2^7 * 7.

Unfortunately the next term has a c167. I've done 74@11k, 214@50k, 430@250k, 904@1M, 2350@3M, and 4480@11M. I've also run polyfind for ~12 hours, with nothing found so far.

For now I'll leave polyfind running and continue on to some curves @43M, but obviously if gnfs is required this is beyond me.[/QUOTE]This may require another team effort. Thanks for the effort you've put into this!

As before, I've setup my ECM server with curves at 43M. Point your clients at aliquot.homeftp.org:8194.

2000@43e6 are done, now switching to B1=11e7. How much curves we need?

My guess is somewhere between 15000 and 17000 curves at 11e7 (85% - 95% or maybe 100% of t55)

Using B1=43000000, B2=240490660426, polynomial Dickson(12), sigma=2509653829
Step 1 took 372692ms
Step 2 took 139297ms
********** Factor found in step 2: 363870433935755493570408639790710306094314900791
Found probable prime factor of 48 digits: 363870433935755493570408639790710306094314900791
Probable prime cofactor 30323476702201745934845694833516593679719643360621673169835986841840696283858405610514646365425891622367705362136256261 has 119 digits

[QUOTE=unconnected;238900]Using B1=43000000, B2=240490660426, polynomial Dickson(12), sigma=2509653829
Step 1 took 372692ms
Step 2 took 139297ms
********** Factor found in step 2: 363870433935755493570408639790710306094314900791
Found probable prime factor of 48 digits: 363870433935755493570408639790710306094314900791
Probable prime cofactor 30323476702201745934845694833516593679719643360621673169835986841840696283858405610514646365425891622367705362136256261 has 119 digits[/QUOTE]:party: :party:

I did ~725@11e6 on the current c141, no factor

edit: that's equivalent to ~106.5% of t40 = ~16.2% of t45

i did 500 @11e6 no factor

800@11e6 and 800@43e6 - no factor. It's ready to gnfs.

I did 2350@3e6 and 1700 (and counting) @11e6. I've been running polyfind for ~4.5 hours now, but it's only found 2 polys so far so it will be a while. I can do the sieving once we have a poly unless someone else wants it.

FWIW, i did 50 @11e6, no factor

Well, adding my 500 puts us at 4285 curves @ 11M.

I'll run some at 43M overnight.....