What is the Greatest Common Factor of 11820 and 11840?

Greatest common factor (GCF) of 11820 and 11840 is 20.

GCF(11820,11840) = 20

We will now calculate the prime factors of 11820 and 11840, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 11820 and 11840.

How to find the GCF of 11820 and 11840?

We will first find the prime factorization of 11820 and 11840. After we will calculate the factors of 11820 and 11840 and find the biggest common factor number .

Step-1: Prime Factorization of 11820

Prime factors of 11820 are 2, 3, 5, 197. Prime factorization of 11820 in exponential form is:

11820 = 2² × 3¹ × 5¹ × 197¹

Step-2: Prime Factorization of 11840

Prime factors of 11840 are 2, 5, 37. Prime factorization of 11840 in exponential form is:

11840 = 2⁶ × 5¹ × 37¹

Step-3: Factors of 11820

List of positive integer factors of 11820 that divides 11820 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 197, 394, 591, 788, 985, 1182, 1970, 2364, 2955, 3940, 5910

Step-4: Factors of 11840

List of positive integer factors of 11840 that divides 11820 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 148, 160, 185, 296, 320, 370, 592, 740, 1184, 1480, 2368, 2960, 5920

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 11820 and 11840. The biggest common factor number is the GCF number.
So the greatest common factor 11820 and 11840 is 20.

Also check out the Least Common Multiple of 11820 and 11840