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Factoring and Multiples
Prime Numbers

What are the factors and prime factors of 70?

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September 11, 2014 8:14PM

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

The 8 factors of 70 are 1, 2, 5, 7, 10, 14, 35, and 70.

The factor pairs of 70 are 1 x 70, 2 x 35, 5 x 14, and 7 x 10.

The proper factors of 70 are 1, 2, 5, 7, 10, 14, and 35 or,

if the definition you are using excludes 1, they are 2, 5, 7, 10, 14, and 35.

The prime factors of 70 are 2, 5, and 7.

The 3 distinct prime factors (listing each prime factor only once) of 70 are 2, 5, and 7. The prime factorization of 70 is 2 x 5 x 7.

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.