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

The factors of 145 are 1, 5, 29, and 145.

The factor pairs of 145 are 1 x 145 and 5 x 29.

The proper factors of 145 are 1, 5, and 29 or,

if the definition you are using excludes 1, they are 5 and 29.

The prime factors of 145 are 5 and 29.

The distinct prime factors (listing each prime factor only once) of 145 are 5 and 29.

The prime factorization of 145 is 5 x 29.

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 145?
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