This number is a prime.
The smallest prime average of two successive perfect powers.
The only known Mersenne prime exponent of the form nextprime(3^n) for some positive integer n (here n = 7), where nextprime(x) is defined as the smallest prime greater than x. [Wang]
The sequence of digits '2203' does not appear in 2^2203 - 1. [Harrison]
(There is one curio for this number that has not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell