This number is a prime.

                                                               10 1111111111

+ The smallest emirp formed from a composite number n followed by 1 repeated n times. [Silva]

+ The smallest 12-digit prime composed of 11 like digits and one different digit. [Katagiri]

+ The smallest near-repunit anti-Yarborough emirp. [Loungrides]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell