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Old 2010-09-05, 17:13   #9
A Sunny Moo
mdettweiler's Avatar
Aug 2007

3·2,083 Posts

Three more for Lennart:

64335*2^480772-1 is prime!
82755*2^480850-1 is prime!
62745*2^480941-1 is prime!

64335*2^480772+1 is not prime. Proth RES64: C83917971FD69EDC Time : 546.088 sec.
82755*2^480850+1 is not prime. Proth RES64: F58D766075B75810 Time : 527.768 sec.
62745*2^480941+1 is not prime. Proth RES64: EA1345ECEE07F55C Time : 490.929 sec.

BTW @Oddball: the PRPnet server is going to run out of work in ~5 minutes. I have no more sieve file left from which to refill it. I don't have time to do it right now, but in a couple of hours I'll see if I can code up a quick Perl script to pull k<100000 out of the August 480K-485K sieve file--that way I can have the entire 480K-485K range on hand instead of just 480K-481K.
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