What are the factors and prime factors of 19?

Answer 1

19 is a Prime number. The only two factors of a prime number are 1 and itself.

The two factors of 19 are 1 and 19. There are only two factors of a prime number.

The only factor pair of 19 is 1 x 19. There is only one factor pair of a prime number.

The proper factors of 19 are only 1 or,

if the definition you are using excludes 1, there are none.

The only prime factor of 19 is 19. There is only one prime factor of a prime number - itself.

The only distinct prime factor (listing each prime factor only once) of 19 is 19.

The prime factorization of 19 is 19. In some cases, to emphasize that it is prime, you might write the prime factorization as 1 x 19.

NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common.
19 is a prime number. Its factors are 1 and 19.