577*2^811657-1 is prime


S.

447*2^807089-1 is prime

531*2^807985-1 is prime :blush: :smile:

577*2^813985-1 is prime

[QUOTE=Sloth;217423]577*2^813985-1 is prime[/QUOTE]

Now this is amazing!

The third prime for k=577 (n=785121, 811657 and 813985) of the 5th Drive (n>600k) and all three found with PRPnet!

495*2^820086-1 is Prime! :smile:

593*2^819630-1 is prime

[URL="http://primes.utm.edu/primes/page.php?id=93133"]349*2^1228715-1[/URL] is prime! Looks like lightning struck twice! :smile:
I just calculated that I should have expected almost exactly 1 prime so far, so to find 2 is much better than I'd expect. And so I continue to be [URL="http://www.mersenneforum.org/showthread.php?t=13490"]luckier than the average prime searcher[/URL].

Congrats Tim on NPLB's 2nd largest prime! :smile:

545*2^829204-1 is prime.

My 4th biggest over 5 years and my 2nd biggest base 2. :smile:

Should push my percentile up a bit. :cool:

[quote=Flatlander;218472]545*2^829204-1 is prime.

My 4th biggest over 5 years and my 2nd biggest base 2. :smile:

Should push my percentile up a bit. :cool:[/quote]

Nice one Chris! Those n>800K primes are always cool. :-)