What is the Greatest Common Factor of 20130 and 20139?

Greatest common factor (GCF) of 20130 and 20139 is 3.

GCF(20130,20139) = 3

We will now calculate the prime factors of 20130 and 20139, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20130 and 20139.

How to find the GCF of 20130 and 20139?

We will first find the prime factorization of 20130 and 20139. After we will calculate the factors of 20130 and 20139 and find the biggest common factor number .

Step-1: Prime Factorization of 20130

Prime factors of 20130 are 2, 3, 5, 11, 61. Prime factorization of 20130 in exponential form is:

20130 = 2¹ × 3¹ × 5¹ × 11¹ × 61¹

Step-2: 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-3: Factors of 20130

List of positive integer factors of 20130 that divides 20130 without a remainder.

1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 61, 66, 110, 122, 165, 183, 305, 330, 366, 610, 671, 915, 1342, 1830, 2013, 3355, 4026, 6710, 10065

Step-4: Factors of 20139

List of positive integer factors of 20139 that divides 20130 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20130 and 20139. The biggest common factor number is the GCF number.
So the greatest common factor 20130 and 20139 is 3.

Also check out the Least Common Multiple of 20130 and 20139