On Apr 9, 2006, at 2:58 AM, Stef Mientki wrote:

>    "The prime polynom is 0xA6A6A6A6 (Yes this is a prime polynom!
>     I went through a hell to find it)"
>
> Is this correct ? At least I can divide it by 2, so what I remember 
> from prime numbers, this is NOT a prime number.
>
Bit masks for the feedback terms that implement a prime polynomial
and "prime numbers" are entirely different things, I think.  For
instance, the "B4" mask used in the tested 8-bit PRNG surely isn't
prime either, and the D7D7D7 use in the generator you're happy with
is 14145495; clearly divisible by 3 and 5...

I couldn't say whether it's actually a valid set of feedback terms
to implement a max-length 32 bit sequence!

BillW

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