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Old 2009-01-20, 17:47   #29
gd_barnes's Avatar
May 2007
Kansas; USA

25·317 Posts

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!

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