This number is a unit (so is neither prime nor composite).

Just showing those entries submitted by 'Capelle': (Click here to show all)

+ The remainder of division of the Mersenne numbers 2p - 1 by p is always equal to 1. [Capelle]

+ The number of primes between two squares is never equal to 1. [Capelle]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell