What are the factors and prime factors of 11?

1 and 11. (11 is a prime number. The only two factors of a prime number are 1 and itself.)

The two factors of 11 are 1 and 11. There are only two factors of a prime number.

The only factor pair of 11 is 1 x 11. There is only one factor pair of a prime number.

The proper factors of 11 are only 1 or, if the definition you are using excludes 1, there are none.

The only prime factor of 11 is 11. There is only one prime factor of a prime number - itself.

The only distinct prime factor (listing each prime factor only once) of 11 is also 11, since there is no repetition of factors.

The prime factorization of 11 is 11. In some cases, to emphasize that it is prime, you might write the prime factorization as 1 x 11.