This number is a prime.
This 2493-digit prime number, both a near-repdigit (all the digits except one are the same) and a palindrome, was discovered by Harvey Dubner in 1989. Written out in full it is a string of 1246 9s, an 8, and 1246 9s. [Dobb]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell