5897

This number is a prime.

5897 is prime. Keller, Buell, and Young found that

5897 * 2²²⁶¹⁹ + 1 is prime, but
5897 * 2ⁿ + 1 is composite for 0 < n < 22619.

Yura found that

5897 * 2¹¹¹⁴⁹¹ + 1 is prime.

Note that both 22619 and 111491 are the smaller members of twin prime pairs. [Melo]

The prime number 5897 can be written as the sum of the terms (k*k!)^3, for k = 1,2,3. [Sandri]

Cotopaxi is the largest active volcano in Equador, reaching a height of 5897 meters. [Robinette]