Prime: 13, 23, 31 Composite: 15, 18, 51, 66, 81
All even numbers, except 2, are composite.
23 is a prime number.
21 is composite. 19 and 23 are prime.
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.
Prime: 13, 23, 31 Composite: 15, 18, 51, 66, 81
66-(1,2,3,6,11,22,33,66) Composite
66 is composite.
composite
All even numbers, except 2, are composite.
It is a composite.
The number 23 is a prime number. It has only 1 and 23 as its factors.
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.