This number is a prime.
Single Curio View: (Seek other curios for this number)The first Carol prime, i.e., a prime of form (2^x-1)^2-2, for x a composite, (x=4). Note that 223 is a prime-digit prime. [Loungrides]
Submitted: 2020-01-31 13:40:40; Last Modified: 2020-01-31 15:21:39.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell