Classify the Numbers

Here are a set of numbers: 

161         163        167        169    187

 289        293        365        367     371

           Can you classify these numbers as prime numbers and composite numbers? And when you find a composite number, can you give its prime factors?

Answer: Primes        Composites

             163                    161 = 7 x 23

             167                     169 = 13²

             293                     187 = 11 x 17

             367                     289 = 17²