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. -3 is neither.
The prime number is the prime factorization. For example, the prime factorization of the prime number 3 is 3. Get it?
It is a prime.
3 is a Prime number. Its only prime factor is 3.
3 is a prime.
3 is a prime number. Its only prime factor is 3.
3 is a prime number. Its only prime factor is 3.
The prime factors are 3, 7 and 19.The prime factors are 3, 7 and 19.The prime factors are 3, 7 and 19.The prime factors are 3, 7 and 19.
3 is a prime number, and 4 and 10 are composite.
1 and 3 are prime. 31 is prime.
It is a prime.
3 is prime.
3 is already prime.