What is the Greatest Common Factor of 66139 and 66158?

Greatest common factor (GCF) of 66139 and 66158 is 19.

GCF(66139,66158) = 19

We will now calculate the prime factors of 66139 and 66158, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66139 and 66158.

How to find the GCF of 66139 and 66158?

We will first find the prime factorization of 66139 and 66158. After we will calculate the factors of 66139 and 66158 and find the biggest common factor number .

Step-1: Prime Factorization of 66139

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

66139 = 19¹ × 59²

Step-2: Prime Factorization of 66158

Prime factors of 66158 are 2, 19, 1741. Prime factorization of 66158 in exponential form is:

66158 = 2¹ × 19¹ × 1741¹

Step-3: Factors of 66139

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

1, 19, 59, 1121, 3481

Step-4: Factors of 66158

List of positive integer factors of 66158 that divides 66139 without a remainder.

1, 2, 19, 38, 1741, 3482, 33079

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66139 and 66158. The biggest common factor number is the GCF number.
So the greatest common factor 66139 and 66158 is 19.

Also check out the Least Common Multiple of 66139 and 66158