It is a composite.
529 is not prime. 529 = 23 * 23
23 is prime because its only factors are 1 and itself.
15 is composite number 17, 19 and 23 are prime numbers.
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 23452 is composite.
23 is prime, 66 is composite.
It is a composite.
23 is a prime number.
21 is composite. 19 and 23 are prime.
Composite. Its prime factors are 23 and 31.
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 23 is prime.
23 is prime.
It is a prime number
9 is composite.
943 is a multiple of 23.
23 and 31 are prime. 36, 62 and 87 are composite.
23, 29 and 31 are prime, the rest are composite.