What is the GCF of 189 and 200 using prime factorizations.?

Answer 1

3 x 3 x 3 x 7 = 189

2 x 2 x 2 x 5 x 5 = 200

No common prime factors; the GCF is 1.

Answer 2

The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question! The greatest factor of any number is itself. Prime factorisation is irrelevant in finding the GCF of a single number.

Answer 3

189

2 x 2 x 2 x 5 x 5 = 200

No prime factors in common, the GCF is 1.

Answer 4

3 x 3 x 3 x 7 = 189 2 x 2 x 2 x 5 x 5 = 200 No common prime factors; the GCF is 1.