# 11110...01111 (25-digits)

This number is a prime.

11110 1110110101 1011101111

The smallest palindromic prime with middle digit 1 that is formed from the reflected successive concatenation of a decreasing number of repeated 1's and 0's. [Wesolowski]

(There are 2 curios for this number that have not yet been approved by an editor.)

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