53
This number is a prime.
Single Curio View: (Seek other curios for this number)
Doubling 53 places a 0 between the digits of its index, i.e., 2*(5+3). [Merickel]
Submitted: 2013-04-26 15:22:35; Last Modified: 2013-06-23 10:53:21.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell