def get_key(dict):
     
    list = [] 
    for key in dict.keys(): 
        list.append(key)           
    return list
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