Question

Are all prime numbers odd?

Answer 1

A natural number that has exactly two factors, i.e.$1$ and the number itself, is a prime number.

Examples of prime numbers are $2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,......$

Thus, Except$2$, all other prime numbers are odd numbers.

Hence, all prime numbers are not odd.