What is the Greatest Common Factor of 197 and 208?

Greatest common factor (GCF) of 197 and 208 is 1.

GCF(197,208) = 1

We will now calculate the prime factors of 197 and 208, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 197 and 208.

How to find the GCF of 197 and 208?

We will first find the prime factorization of 197 and 208. After we will calculate the factors of 197 and 208 and find the biggest common factor number .

Step-1: Prime Factorization of 197

Prime factors of 197 are 197. Prime factorization of 197 in exponential form is:

197 = 197¹

Step-2: Prime Factorization of 208

Prime factors of 208 are 2, 13. Prime factorization of 208 in exponential form is:

208 = 2⁴ × 13¹

Step-3: Factors of 197

List of positive integer factors of 197 that divides 197 without a remainder.

Step-4: Factors of 208

List of positive integer factors of 208 that divides 197 without a remainder.

1, 2, 4, 8, 13, 16, 26, 52, 104

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 197 and 208. The biggest common factor number is the GCF number.
So the greatest common factor 197 and 208 is 1.

Also check out the Least Common Multiple of 197 and 208