def is_prime_numbers(n): 
    for i in range(2,n//2+1): 
        if(n%i==0): 
            return(0) 
    return(1) 
 
lower_range = int(input("Enter your lower number:")) 
upper_range = int(input("Enter your upper number:")) 
prime_numbers_list = []
sum_of_prime_numbers = 0 
for i in range(lower_range, upper_range+1): 
    if(is_prime_numbers(i)): 
        prime_numbers_list.append(i) 
print('The sum of prime numbers:', sum(prime_numbers_list))