View Single Post
Old 2008-02-04, 17:26   #7
gd_barnes
 
gd_barnes's Avatar
 
May 2007
Kansas; USA

276516 Posts
Default

Quote:
Originally Posted by em99010pepe View Post
639*2^343305-1 is prime!
489*2^343303-1 is prime!
Great run Carlos! That's amazing on k=639. I cannot recall primes so close together on a single k at such a high n and such a low k. (only n=378 difference)

In the mean time, another 'smaller' one:

533*2^321410-1 is prime


Gary
gd_barnes is offline   Reply With Quote