What is the Greatest Common Factor of 20139 and 20146?

Greatest common factor (GCF) of 20139 and 20146 is 7.

GCF(20139,20146) = 7

We will now calculate the prime factors of 20139 and 20146, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20139 and 20146.

How to find the GCF of 20139 and 20146?

We will first find the prime factorization of 20139 and 20146. After we will calculate the factors of 20139 and 20146 and find the biggest common factor number .

Step-1: Prime Factorization of 20139

Prime factors of 20139 are 3, 7, 137. Prime factorization of 20139 in exponential form is:

20139 = 3¹ × 7² × 137¹

Step-2: Prime Factorization of 20146

Prime factors of 20146 are 2, 7, 1439. Prime factorization of 20146 in exponential form is:

20146 = 2¹ × 7¹ × 1439¹

Step-3: Factors of 20139

List of positive integer factors of 20139 that divides 20139 without a remainder.

1, 3, 7, 21, 49, 137, 147, 411, 959, 2877, 6713

Step-4: Factors of 20146

List of positive integer factors of 20146 that divides 20139 without a remainder.

1, 2, 7, 14, 1439, 2878, 10073

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20139 and 20146. The biggest common factor number is the GCF number.
So the greatest common factor 20139 and 20146 is 7.

Also check out the Least Common Multiple of 20139 and 20146