It is composite.
Two is prime. All other even numbers are composite.
Twenty is composite. It has the factors 1, 2, 4 ,5, 10, and 20. Prime numbers have exactly two factors. Composite numbers have three or more.
Yes.
It is a prime.
prime number
21 is not a prime number.
No 23 is a prime #
Forty-five is a composite number because it is not prime. Any number that is not prime is a composite number...Examples:4451002002256,0001,000,000
It is a prime.
Yes.
composite. 123 = 3 * 41