Why is 2 the lowest prime number?

Answer 1

The primes are all positive number and 1 is not a prime. We look that the next number, 2 and not that the only divisors of 2 are 1 and 2 itself. That makes it prime and since 1 was not prime, by convention, 2 is the smallest prime.

Answer 2

Two is the lowest but is the lowest even prime