55555333

This number is a prime.

Single Curio View:   (Seek other curios for this number)
Five 5's followed by three 3's is prime. Is the only prime-digit prime that contains two distinct digits d with repetition of every digit d times. [De Geest and Loungrides]

Submitted: 2004-02-08 07:45:24;   Last Modified: 2009-07-05 08:43:26.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell