17519

This number is a prime.

+ The number of amicable pairs with a smaller member not exceeding 10 trillion is an emirp. [Beedassy]

+ The smallest emirp formed by inserting a digit between two consecutive multidigit primes, i.e. (17, 19). [Bajpai]

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