73.0-73.5M to 64 bits
 

I'm preparing to start this range (12036 expontets) to TF. I'll start it in a few days (on Monday, probably).

Start and progress
 

All available CPU's are working on this range. 9 factors have been already found out of 693 exponents TF'ed (1.3%).

70% done
 

8362 (69.74%) TF'ed. 122 (1.46%) factors found. Slower comps should finish their subranges before June 30. Faster ones will start a new range on Monday.

Done!
 

12036 exponents TF'ed. 174 factors found (1.45%). Results sent to George (not attached, but if you wish:smile:...)