What is the Greatest Common Factor of 693 and 711?

Greatest common factor (GCF) of 693 and 711 is 9.

GCF(693,711) = 9

We will now calculate the prime factors of 693 and 711, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 693 and 711.

How to find the GCF of 693 and 711?

We will first find the prime factorization of 693 and 711. After we will calculate the factors of 693 and 711 and find the biggest common factor number .

Step-1: Prime Factorization of 693

Prime factors of 693 are 3, 7, 11. Prime factorization of 693 in exponential form is:

693 = 3² × 7¹ × 11¹

Step-2: Prime Factorization of 711

Prime factors of 711 are 3, 79. Prime factorization of 711 in exponential form is:

711 = 3² × 79¹

Step-3: Factors of 693

List of positive integer factors of 693 that divides 693 without a remainder.

1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231

Step-4: Factors of 711

List of positive integer factors of 711 that divides 693 without a remainder.

1, 3, 9, 79, 237

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 693 and 711. The biggest common factor number is the GCF number.
So the greatest common factor 693 and 711 is 9.

Also check out the Least Common Multiple of 693 and 711