7

This number is a prime.

Single Curio View:   (Seek other curios for this number)
7 is the number of frieze groups, i.e., the groups consisting of symmetries of the plane whose group of translations is isomorphic to the group of integers.

Submitted: 2004-01-10 19:43:31;   Last Modified: 2008-01-30 11:28:00.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell