How to Print Sum of Prime Numbers in Python

Here is a way to print the sum of the prime numbers. The simplified logic helps you with your interviews and projects.

Prime number logic divides the number by 2; if the remainder is zero, you can say it is a prime number. The same is applied in this program.

The sum of prime numbers

import numpy as np

def is_prime(num):
    if num < 2:
        return False
    for i in range(2, int(np.sqrt(num)) + 1):
        if num % i == 0:
            return False
    return True

arr1 = np.array([5,10,17,23,30,47,50])
prime_list = np.array([])
prime_sum = 0

for num in arr1:
    if is_prime(num):
        prime_list = np.append(prime_list, num)
        prime_sum += num

print("prime list:", prime_list)
print("prime sum:", prime_sum)

Here’s the output, which prints the prime number list and the sum of these.

prime list: [ 5. 17. 23. 47.]
prime sum: 92

References

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