Question: what is the greatest common factor of 189 and 200 using prime factorization?
Answer: Greatest Common Factor of 189 and 200. Greatest common factor (GCF) of 189 and 200 is 1. We will now calculate the prime factors of 189 and 200, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 189 and 200.