What is the Greatest Common Factor of 66120 and 66139?

Greatest common factor (GCF) of 66120 and 66139 is 19.

GCF(66120,66139) = 19

We will now calculate the prime factors of 66120 and 66139, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66120 and 66139.

How to find the GCF of 66120 and 66139?

We will first find the prime factorization of 66120 and 66139. After we will calculate the factors of 66120 and 66139 and find the biggest common factor number .

Step-1: Prime Factorization of 66120

Prime factors of 66120 are 2, 3, 5, 19, 29. Prime factorization of 66120 in exponential form is:

66120 = 2³ × 3¹ × 5¹ × 19¹ × 29¹

Step-2: Prime Factorization of 66139

Prime factors of 66139 are 19, 59. Prime factorization of 66139 in exponential form is:

66139 = 19¹ × 59²

Step-3: Factors of 66120

List of positive integer factors of 66120 that divides 66120 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 29, 30, 38, 40, 57, 58, 60, 76, 87, 95, 114, 116, 120, 145, 152, 174, 190, 228, 232, 285, 290, 348, 380, 435, 456, 551, 570, 580, 696, 760, 870, 1102, 1140, 1160, 1653, 1740, 2204, 2280, 2755, 3306, 3480, 4408, 5510, 6612, 8265, 11020, 13224, 16530, 22040, 33060

Step-4: Factors of 66139

List of positive integer factors of 66139 that divides 66120 without a remainder.

1, 19, 59, 1121, 3481

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66120 and 66139. The biggest common factor number is the GCF number.
So the greatest common factor 66120 and 66139 is 19.

Also check out the Least Common Multiple of 66120 and 66139