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66 is a composite number because it has factors other than 1 and itself. It is not a Prime number.

The 8 factors of 66 are 1, 2, 3, 6, 11, 22, 33, and 66.

The factor pairs of 66 are 1 x 66, 2 x 33, 3 x 22, and 6 x 11.

The proper factors of 66 are 1, 2, 3, 6, 11, 22, and 33 or,
if the definition you are using excludes 1, they are 2, 3, 6, 11, 22, and 33.

The prime factors of 66 are 2, 3, and 11.

The distinct prime factors (listing each prime factor only once) of 66 are also 2, 3, and 11.

The prime factorization of 66 is 2 x 3 x 11.

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.

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Q: What are the factors and prime factors of 66?
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