What is the Greatest Common Factor of 11940 and 11955?

Greatest common factor (GCF) of 11940 and 11955 is 15.

GCF(11940,11955) = 15

We will now calculate the prime factors of 11940 and 11955, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 11940 and 11955.

How to find the GCF of 11940 and 11955?

We will first find the prime factorization of 11940 and 11955. After we will calculate the factors of 11940 and 11955 and find the biggest common factor number .

Step-1: Prime Factorization of 11940

Prime factors of 11940 are 2, 3, 5, 199. Prime factorization of 11940 in exponential form is:

11940 = 2² × 3¹ × 5¹ × 199¹

Step-2: Prime Factorization of 11955

Prime factors of 11955 are 3, 5, 797. Prime factorization of 11955 in exponential form is:

11955 = 3¹ × 5¹ × 797¹

Step-3: Factors of 11940

List of positive integer factors of 11940 that divides 11940 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 199, 398, 597, 796, 995, 1194, 1990, 2388, 2985, 3980, 5970

Step-4: Factors of 11955

List of positive integer factors of 11955 that divides 11940 without a remainder.

1, 3, 5, 15, 797, 2391, 3985

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 11940 and 11955. The biggest common factor number is the GCF number.
So the greatest common factor 11940 and 11955 is 15.

Also check out the Least Common Multiple of 11940 and 11955