263

This number is a prime.

Single Curio View:   (Seek other curios for this number)
The smallest prime formed by inserting a semiprime between the semiprime's factors. The sequence of such primes begins 263, 3217, 22613, 33311, etc. [Honaker]

Submitted: 2006-10-14 15:03:56;   Last Modified: 2020-06-09 09:44:41.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell