What is the Greatest Common Factor of 18021 and 18039?

Greatest common factor (GCF) of 18021 and 18039 is 3.

GCF(18021,18039) = 3

We will now calculate the prime factors of 18021 and 18039, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18021 and 18039.

How to find the GCF of 18021 and 18039?

We will first find the prime factorization of 18021 and 18039. After we will calculate the factors of 18021 and 18039 and find the biggest common factor number .

Step-1: Prime Factorization of 18021

Prime factors of 18021 are 3, 6007. Prime factorization of 18021 in exponential form is:

18021 = 3¹ × 6007¹

Step-2: Prime Factorization of 18039

Prime factors of 18039 are 3, 7, 859. Prime factorization of 18039 in exponential form is:

18039 = 3¹ × 7¹ × 859¹

Step-3: Factors of 18021

List of positive integer factors of 18021 that divides 18021 without a remainder.

1, 3, 6007

Step-4: Factors of 18039

List of positive integer factors of 18039 that divides 18021 without a remainder.

1, 3, 7, 21, 859, 2577, 6013

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18021 and 18039. The biggest common factor number is the GCF number.
So the greatest common factor 18021 and 18039 is 3.

Also check out the Least Common Multiple of 18021 and 18039