#primr number checker 

num = int(input ("prime number cheacker , enter a number : "))
  
if num ==1  :
    print("its NOT a prime number ")
    
elif num > 1:
     for i in range(2, num):
        if (num % i) == 0:
         print("its NOT a primr number ")
        
        elif (num % i) != 0:
         print ( "Its   a prime number")
        break