7177
This number is a prime.
The only near-repdigit emirp formed by inserting the nth prime between two n’s, (case n=7). [Loungrides]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
The only near-repdigit emirp formed by inserting the nth prime between two n’s, (case n=7). [Loungrides]