13000000000000019
This number is a prime.
1300000 0000000019
An emirp that starts with 13, ends with 19 and has a length
17 digits. Note 13, 17 and 19 are consecutive primes. [Bajpai]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell