# 18919

This number is a prime.

The smallest invertible prime that is the sum of three consecutive invertible primes, i.e., (6101 + 6199 + 6619). [Jha]

The smallest five-digit invertible prime such that the sum of itself and all truncations of itself +/- 1, i.e., (18919 + 1891 + 189 + 18 + 1) +/- 1 is a twin prime pair {21019, 21017}. [Bajpai]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell