What is the Greatest Common Factor of 188 and 195?

Greatest common factor (GCF) of 188 and 195 is 1.

GCF(188,195) = 1

We will now calculate the prime factors of 188 and 195, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 188 and 195.

How to find the GCF of 188 and 195?

We will first find the prime factorization of 188 and 195. After we will calculate the factors of 188 and 195 and find the biggest common factor number .

Step-1: Prime Factorization of 188

Prime factors of 188 are 2, 47. Prime factorization of 188 in exponential form is:

188 = 2² × 47¹

Step-2: Prime Factorization of 195

Prime factors of 195 are 3, 5, 13. Prime factorization of 195 in exponential form is:

195 = 3¹ × 5¹ × 13¹

Step-3: Factors of 188

List of positive integer factors of 188 that divides 188 without a remainder.

1, 2, 4, 47, 94

Step-4: Factors of 195

List of positive integer factors of 195 that divides 188 without a remainder.

1, 3, 5, 13, 15, 39, 65

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 188 and 195. The biggest common factor number is the GCF number.
So the greatest common factor 188 and 195 is 1.

Also check out the Least Common Multiple of 188 and 195