What is the Greatest Common Factor of 668 and 679?

Greatest common factor (GCF) of 668 and 679 is 1.

GCF(668,679) = 1

We will now calculate the prime factors of 668 and 679, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 668 and 679.

How to find the GCF of 668 and 679?

We will first find the prime factorization of 668 and 679. After we will calculate the factors of 668 and 679 and find the biggest common factor number .

Step-1: Prime Factorization of 668

Prime factors of 668 are 2, 167. Prime factorization of 668 in exponential form is:

668 = 2² × 167¹

Step-2: Prime Factorization of 679

Prime factors of 679 are 7, 97. Prime factorization of 679 in exponential form is:

679 = 7¹ × 97¹

Step-3: Factors of 668

List of positive integer factors of 668 that divides 668 without a remainder.

1, 2, 4, 167, 334

Step-4: Factors of 679

List of positive integer factors of 679 that divides 668 without a remainder.

1, 7, 97

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 668 and 679. The biggest common factor number is the GCF number.
So the greatest common factor 668 and 679 is 1.

Also check out the Least Common Multiple of 668 and 679