464-466 complete, no primes
Taking 480-482

475-476 complete, no primes.

Taking 482-483.

Finally I added "more details" about the drive, in the form of n_min for respective Ks, to the first post of the thread.

And Battlemaxx just reported one more prime in the drive:
279*2^455704-1 (137184 digits).

479-480 complete, one prime (279 479437).

Taking 483-485 (2 files).

476-477 complete, no primes.

Taking 485-486.

482-483 and 485-486 complete, no primes.

Taking 486-488.

480-482 complete, no primes
Taking 488-490

483-485 complete, no primes.

Taking 490-491.

487-488 complete, no primes.

Taking 491-492.

461-462, 463-464, and 467-469 complete, no primes.

486-487 complete, no primes.

Taking 492-493.