What is the Greatest Common Factor of 1173 and 1188?

Greatest common factor (GCF) of 1173 and 1188 is 3.

GCF(1173,1188) = 3

We will now calculate the prime factors of 1173 and 1188, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1173 and 1188.

How to find the GCF of 1173 and 1188?

We will first find the prime factorization of 1173 and 1188. After we will calculate the factors of 1173 and 1188 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 1188

Prime factors of 1188 are 2, 3, 11. Prime factorization of 1188 in exponential form is:

1188 = 2² × 3³ × 11¹

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 1188

List of positive integer factors of 1188 that divides 1173 without a remainder.

1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 27, 33, 36, 44, 54, 66, 99, 108, 132, 198, 297, 396, 594

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1173 and 1188. The biggest common factor number is the GCF number.
So the greatest common factor 1173 and 1188 is 3.

Also check out the Least Common Multiple of 1173 and 1188