880923615*2^388257-1 (116886 digits)

From the 5th drive:

237*2^421862-1 (126996 digits)

Another prime for another k from the 5th drive:

135*2^437544-1 (131716 digits)

The first new prime for k=173 which I began testing from n=210k, the previously reported n_max both on ours and Keller's stats page (with a prime at 360004). It's now checked to 385k and 400-420k. Will close the gap in a few days.

173*2^409470-1 (123265 digits)

12345*2^607395-1 (182849 digits)

904883265*2^354972-1 (106867 digits)

Finally a prime of a reasonable size :banana:

[B]87*2^942790-1[/B] (283811 digits)

Congrats Kosmaj!

Cruelty, thanks!
I just realized it's in a close proximity to your 25*2^942563-1, less than 230 bits apart.

From the 5th drive:

57*2^450430-1 (135595 digits)

Just got back from vacation to find
692835*2^857593-1 (258168 digits)