This number is a composite.

+ The only seven-digit palindrome that is the product of consecutive primes (1051*1061). [Schuler]

+ The only brilliant number formed by inserting a 3-digit palindromic prime, (i.e., 151), between two identical double-digit palindromic primes p, (p=11), i.e., 1115111 = 1051 × 1061. [Loungrides]

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