23 is prime. Prime numbers don't have proper factors.
23 is prime. Prime numbers don't have proper factors.
23 is prime. Prime numbers don't have proper factors.
23 is prime. Prime numbers don't have proper factors.
It can be. 23 is a proper factor of 46.
23 is prime. Prime numbers don't have proper factors. Its multiples are 23, 46, 69 and so on.
23 has no proper factors - it is prime.
23 and 29
19 and 23
2 and 23
Zero doesn't have any proper factors.
One doesn't have any proper factors.
2, 4, 23, 46