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

The 6 factors of 12 are 1, 2, 3, 4, 6, and 12.

The factor pairs of 12 are 1 x 12, 2 x 6, and 3 x 4.

The proper factors of 12 are 1, 2, 3, 4, and 6 or,

if the definition you are using excludes 1, they are 2, 3, 4, and 6.

The prime factors of 12 are 2, 2, and 3

Note: There is repetition of these factors, so if the prime factors are being listed instead of the prime factorization, usually only the distinct prime factors are listed.

The 2 distinct prime factors (listing each prime factor only once) of 12 are 2 and 3.

The prime factorization of 12 is 2 x 2 x 3 or, in index form (in other words, using exponents), 22 x 3.

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.

Note: There are comments associated with this question. See the discussion page to add to the conversation.

The factors of 12 are: 1 2 3 4 6 12.

The prime factors are: 2 3

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Q: What are the factors and prime factors of 12?

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