603*2^695447-1 is prime

885*2^696823-1 is prime

311*2^1581686-1 (476138 digits), i will release this k @ n=1.6M

congratulations for NPLB's first prime >1M!

That was fast:

325*2^809389-1 is prime!

Nice one Sven.

Real nice one Cruelty.

[quote=Cruelty;178896]311*2^1581686-1 (476138 digits), i will release this k @ n=1.6M[/quote]
:george::george::george::george::george:


Sweet! Nearly n=600K larger than our previous largest prime. Congrats! :smile:

There will be more where that came from when we get k=300-400/n=1M-2M finished sieving within a few months.

[quote=Svenie25;178910]That was fast:

325*2^809389-1 is prime![/quote]

Blast, just my luck on that drive; stopping a little too soon. But you were due for one and it was a nice one. Way to go! :smile:

377*2^850160-1 is prime

Looks like k=325 is very productive:

[URL="http://primes.utm.edu/primes/page.php?id=89095"]325*2^842787-1 is prime![/URL]

P.S.: Why do I have an avater????

[quote=Svenie25;179505]Looks like k=325 is very productive:

[URL="http://primes.utm.edu/primes/page.php?id=89095"]325*2^842787-1 is prime![/URL]

P.S.: Why do I have an avater????[/quote]
the gerbils(R. I. P.) used to assign avatars randomly to people with no avatar
i think the snake has taken over their duties
whichever it is went a bit further a few days ago they changed the avatars of some of the old forum members as well