#! /usr/bin/python

def isprim(num):
 for x in range(2, num):
     if num % x == 0:
        return 0
        break
 else:
      return 1

x=1
while x != '.' or x != 'q' or x != 'Q':  
 x = raw_input("Please enter a number or q to quit: ")
 try: number=int(x)
 except: 
   print x, 'is not integer.'
   break
 if number > 0:
  if isprim(number): print number, 'is a prim.'
  else: print number, 'is not a prim.'
 else: 
  print number, 'is not pozitiv'