Yes.
-9
No. 31 is prime.
The factors of 279 are: 1, 3, 9, 31, 93, and 279.The prime factors of 279 are: 3 and 31.
The factors of 9 are 1, 3 and 9. 31 is prime, it has no factors except for one and itself. The GCF is 1.
31 is prime so 31 is the prime factorization of 31
31 is a prime number. Its only prime factor is 31.
31 is a prime number.
31 is a prime number. Its only prime factor is 31.
31 is PRIME.
31 is prime.
31 is a prime number
211,141 is not a prime. 31 is a prime.