2 AND 43
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The 6 factors of 172 are 1 2 4 43 86 172.The prime factors of 172 are 2, 2, and 43.The prime factorization of 172 is 2 x 2 x 43.
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.
A factor can or cannot be a prime number Ex: 2 is the factor of all other even numbers its a prime number but 9 is a factor of 18 and its not a prime number A prime is a factor but a factor being a prime number varies
A composite factor is a factor that is a composite number, as opposed to a prime factor which is a factor that is a prime number.
12 is a composite number, not a prime factor.