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Old 2005-12-29, 09:43   #6
axn
 
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Jun 2003

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Quote:
Originally Posted by jasong
...if n*k^n-1 can be found prime for a certain k...
Ok. I am _slightly_ confused. There are 3 different forms you've mentioned.

n*k^2-1
n*2^k-1
n*k^n-1

Which is the form that is needed to have a prime?

The last one is called Generalized Woodall primes -- I think it can be sieved by multisieve.

Last fiddled with by axn on 2005-12-29 at 09:44
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