HW1

What points taken off for.

-.25 Didn't handle boundary condition correctly (e.g., 2 is prime)
     Note: the example I gave did not handle 2 correctly, so if you 
     just inherited that from the example I did not take off.
+.25 if you correctly fixed the "bug" I had in terms of 2.

-1 Not handling many cases correctly - e.g., you are really only
   testing if the number is even or odd.