def check_email(email):
	import re 
	regex = '^[a-z0-9]+[\._]?[a-z0-9]+[@]\w+[.]\w{2,3}$'
	 
	if(re.search(regex,email)): 
		return ("Valid Email") 
	else: 
		return ("Invalid Email") 
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