2447

This number is a prime.

+ Zeroless; repeated even interior digit; 2^5+4^5+4^5+7^5 = 18887, same repetition. Only such 4-digit prime. [Wood]

(There are 2 curios for this number that have not yet been approved by an editor.)

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