What is the Greatest Common Factor of 1173 and 1191?

Greatest common factor (GCF) of 1173 and 1191 is 3.

GCF(1173,1191) = 3

We will now calculate the prime factors of 1173 and 1191, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1173 and 1191.

How to find the GCF of 1173 and 1191?

We will first find the prime factorization of 1173 and 1191. After we will calculate the factors of 1173 and 1191 and find the biggest common factor number .

Step-1: Prime Factorization of 1173

Prime factors of 1173 are 3, 17, 23. Prime factorization of 1173 in exponential form is:

1173 = 3¹ × 17¹ × 23¹

Step-2: Prime Factorization of 1191

Prime factors of 1191 are 3, 397. Prime factorization of 1191 in exponential form is:

1191 = 3¹ × 397¹

Step-3: Factors of 1173

List of positive integer factors of 1173 that divides 1173 without a remainder.

1, 3, 17, 23, 51, 69, 391

Step-4: Factors of 1191

List of positive integer factors of 1191 that divides 1173 without a remainder.

1, 3, 397

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1173 and 1191. The biggest common factor number is the GCF number.
So the greatest common factor 1173 and 1191 is 3.

Also check out the Least Common Multiple of 1173 and 1191