new prime for drive #6
 

797*2^722812-1 is prime

411*2^731153-1 is prime
495*2^732566-1 is prime

next drive #6 prime
 

741*2^724834-1 is prime

775*2^725341-1 is prime
429*2^733315-1 is prime

807*2^731802-1 is prime

BTW, this gives me 200 "active" primes on the Top 5000 list. A personal goal achieved.

375*2^976533-1 is prime

Great work Ian. In the former words of Chris, "You now own 4% of the top 5000.".

Nice prime for k=375 too! :smile:

2 primes in an n=~1700 range for k=495 at n>730K! :smile:

495*2^734277-1 is prime

579*2^735459-1 is prime

This one has a nice "ring" to it:

695*2^730000-1 is prime

797*2^732318-1 is prime
469*2^739729-1 is prime