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2009-01-20, 21:45   #30
Flatlander
I quite division it

"Chris"
Feb 2005
England

31×67 Posts

Quote:
 Originally Posted by gd_barnes 1403*2^359146-1 is confirmed prime 1609*2^359209-1 is prime I think k=1700-2000 is a nearly barren range! For n=350K to the current processing limit, we have: 23 total primes for k=1400-1700 3 total primes for k=1700-2000 This includes confirmed primes so is not biased by previous searching in any way. As Chris is fond of me saying: Primes are very strange! Gary
There's very strange and then there's really weird.
This sort of thing used to drive me nuts when I would do (semi)fixed n tests. Five primes for one n, then none for the next etc.

Last fiddled with by Flatlander on 2009-01-20 at 21:46