981*2^904438-1 is prime.

871*2^904541-1 is Prime

Lennart

961*2^906211-1 is Prime

Lennart

Ototero found:

843*2^924698-1 is prime

825*2^928684-1 is Prime!

Tim found:

989*2^905968-1 is prime

Well, it looks like my prime drought is indeed passed:

[url=http://primes.utm.edu/primes/page.php?id=99735]829*2^914335-1[/url] is prime! :grin:

This one came on my Q6600, the machine that has been particularly allergic to primes of late.

Also of note, this prime is my largest ever (my previous record being [url=http://primes.utm.edu/primes/page.php?id=95525]172257*6^349166+1[/url] at 271710 digits; this latest prime comes in at 275246 digits.)

[QUOTE=mdettweiler;258784]Well, it looks like my prime drought is indeed passed:

[url=http://primes.utm.edu/primes/page.php?id=99735]829*2^914335-1[/url] is prime! :grin:

This one came on my Q6600, the machine that has been particularly allergic to primes of late.

Also of note, this prime is my largest ever (my previous record being [url=http://primes.utm.edu/primes/page.php?id=95525]172257*6^349166+1[/url] at 271710 digits; this latest prime comes in at 275246 digits.)[/QUOTE]
:tu:
Nearly one-per-week! :wink:
Long may it continue.

edit:
Hey, this happened last time you found a prime:

965*2^914686-1 is prime.

[QUOTE=Flatlander;258807]:tu:
Nearly one-per-week! :wink:
Long may it continue.

edit:
Hey, this happened last time you found a prime:

965*2^914686-1 is prime.[/QUOTE]
Hmm, go figure. I guess I'll have to find another one for you next week, then... :smile:

843*2^918816-1 is prime.

915*2^947117-1 is prime.