RIP DCTF.

[Gordon]

Originally Posted by petrw1

And Billy Joel:

Originally Posted by lycorn

Depends on the mfaktc version you use. Older versions can go down to to 2K.
Not very efficient, but still way more efficient than CPU TFing.

Do you have a copy of that old version anywhere...

[petrw1]

Originally Posted by Gordon

Do you have a copy of that old version anywhere...

Maybe here?

http://www.mersenneforum.org/mfaktc/

[petrw1]

Originally Posted by Mark Rose

Those are all between 0 and 100 k, outside of the GPU range.

Some might say: "WHY!!!!??? ECM progress is WAYYYY beyond 64 bits for this range."

Some might say: "Where does it end?" Because, if and when these are completed to 64 Bits the next range above may be at 65 or 66 bits.

That being, said I am one of the few that has a few old cores clunking away at this range.

[petrw1]

This tells me that some time prior to DC getting there we need to TF:

http://www.mersenne.ca/status/tf/0/0/3/6000
About 22,000 66-69M from 74-75 bits

http://www.mersenne.ca/status/tf/0/0/3/7000
About 2,500 70-71M from 74-75 bits.