Peter Haworth wrote:
> On Fri, 19 Oct 2001 09:48:51 +0100, Greg McCarroll wrote:
> >    3 , 7 , 31 , 127
> >         Clue: They are in sequence
> 
> 2**p - 1, where p is prime

aka "Mersenne numbers". (A subset of those numbers is the "Mersenne
primes".)

Apparently, they're important in factoring numbers and cryptography etc.
because of their special form. Or something.

Cheers,
Philip
-- 
Philip Newton <[EMAIL PROTECTED]>
All opinions are my own, not my employer's.
If you're not part of the solution, you're part of the precipitate.

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