### What are the factors and prime factors of 165?

165 is a composite number because it has factors other than 1 and itself. It is not a prime number. The 8 factors of 165 are 1, 3, 5, 11, 15, 33, 55, and 165. The factor pairs of 165 are 1 x 165, 3 x 55, 5 x 33, and 11 x 15. The proper factors of 165 are 1, 3, 5, 11, 15, 33, and 55 or, if the definition you are using…