1117993

This number is a prime.

The smallest emirp such that the sum of the k-th powers of its digits is prime for each k = 0 to 9. The resulting primes are 7, 31, 223, 1831, 15607, 135151, 1181263, 10391671, 91864807, and 815214271. Remarkably, their last digits repeat with period 4 as 7, 1, 3, 1. [Ahmed]