What is the Greatest Common Factor of 195 and 215?

Greatest common factor (GCF) of 195 and 215 is 5.

GCF(195,215) = 5

We will now calculate the prime factors of 195 and 215, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 195 and 215.

How to find the GCF of 195 and 215?

We will first find the prime factorization of 195 and 215. After we will calculate the factors of 195 and 215 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 215

Prime factors of 215 are 5, 43. Prime factorization of 215 in exponential form is:

215 = 5¹ × 43¹

Step-3: Factors of 195

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

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

Step-4: Factors of 215

List of positive integer factors of 215 that divides 195 without a remainder.

1, 5, 43

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 195 and 215. The biggest common factor number is the GCF number.
So the greatest common factor 195 and 215 is 5.

Also check out the Least Common Multiple of 195 and 215