def check_IP(Ip):
	import re 
	regex = '''^(25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)\.( 
				25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)\.( 
				25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)\.( 
				25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)$'''
	 
	if(re.search(regex, Ip)): 
		return ("Valid IP address") 
	else: 
		return ("Invalid IP address") 
def is_not_prime(n):
    import math
    
    result = False
    for i in range(2,int(math.sqrt(n)) + 1):
        if n % i == 0:
            result = True
    return result