python multiprocessing for check prime numbers

is_prime.py

from multiprocessing import Pool


def is_prime(number):
    if number == 2 or number == 3:
        return number, True
    if number % 2 == 0 or number < 2:
        return number, False
    for i in range(3, int(number**0.5) + 1, 2):
        if number % i == 0:
            return number, False
    return number, True


if __name__ == '__main__':
    numbers = range(5000000)
    pool = Pool(processes=4)
    print(pool.map(is_prime, numbers))

my god this is a smooth approach