import math
isPrime = True

def checkprime (x,z):
   #global isPrime 
   if x%z == 0:
       return 0
   if z <= x:
       checkprime (x,z+1)
   return 1

def range(x,y):
   if x<=y:
       isPrime=checkprime(x,z)
       if isPrime == 1:
           print x,'einai prime'
       else:
           print x,'den einai prime'
       range(x+1,y)
   else :
       return

x=int(input('Doste x  :'))
y=int(input('Doste y :'))
z=2

range(x,y)