Definition:Mersenne Number/Mistake

Source Work

 * Chapter $7$: Patterns in Numbers
 * Euclid
 * Euclid

Mistake

 * Numbers of the form $2^p - 1$, with $p$ prime, are called Mersenne primes, ...

Correction
What has described are in fact Mersenne numbers.

Not all numbers of the form $2^p - 1$, with $p$ prime, are in fact themselves prime.