This number is a prime.
5897 is prime. Keller, Buell, and Young found that
5897 * 222619 + 1 is prime, butYura found that
5897 * 2n + 1 is composite for 0 < n < 22619.
5897 * 2111491 + 1 is prime.Note that both 22619 and 111491 are the smaller members of twin prime pairs. [Melo]
Cotopaxi is the largest active volcano in Equador, reaching a height of 5897 meters. [Robinette]
(There is one curio for this number that has not yet been approved by an editor.)
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell