Yes, congratulations Kosmaj!
a.

Thanks guys, I was just lucky :smile: But it's true that this machine (an old Celery) has been running primeless for 6 months before hitting this one!

5655*2^531926-1 (160130 digits)

976401855*2^385803-1 (116148 digits)

615*2^651041-1 (195986 digits)

1090279905*2^474937-1 (142980 digits)

915*2^652353-1 (196381 digits)

825762795*2^409764-1 (123361 digits)

And finally after more than a year since the last prime...

81*2^1335675-1 (402081 digits)

5555*2^561246-1 (168956 digits)

[QUOTE=amphoria;135633]And finally after more than a year since the last prime...

81*2^1335675-1 (402081 digits)[/QUOTE]

Nice find, sir. Megabits are not trivial discoveries.
-Curtis