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# What is a common prime factor?

Updated: 4/28/2022

Wiki User

11y ago

Best Answer

All numbers have factors. Some factors are prime numbers. A prime factor is a factor that is a Prime number. A common prime factor is a prime factor that appears on the list of factors of two or more given numbers.

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11y ago
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### What is the common factor of co-prime number?

Co-prime numbers have a common factor of 1.

### Which are the prime numbers with 1 as the common factor?

All prime numbers have a common factor of 1.

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The least common prime factor of 24 and 28 is 2.

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The prime factor of 9 is 3. For it to be common, it needs to be compared to another set of prime factors.

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You do a factor rainbow to find a prime factorization. You compare prime factorizations to find a greatest common factor.

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There are no common prime factors!

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