Re: Finding the next larger prime.

Perhaps you were thinking of Mersenne primes. The equation is 2^p - 1, where p is also a prime. This doesn't give you exactly what you want, but it will give you a larger prime.

http://www.mersenne.org/prime.htm

Comment on Re: Finding the next larger prime.

Replies are listed 'Best First'.
Re: Re: Finding the next larger prime. by QM (Parson) on Oct 30, 2003 at 20:17 UTC
Note: p is required to be prime, but that is not a sufficient condition. At last check there were only 39 known p which generate Mersenne primes, and generally these p are not sequential. -QM -- Quantum Mechanics: The dreams stuff is made of	[reply]