12421

This number is a prime.

+ The smallest palindromic prime formed form a composite number and its divisors. [Silva]

+ The only palindromic prime whose digits are powers of 2 in ascending and then descending order. [Leonardis]

+ January 24, 2021, written in m/dd/yy format (i.e., 1/24/21) will be a Palindromic Prime Day.

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