What is the Greatest Common Factor of 21309 and 21326?

Greatest common factor (GCF) of 21309 and 21326 is 1.

GCF(21309,21326) = 1

We will now calculate the prime factors of 21309 and 21326, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21309 and 21326.

How to find the GCF of 21309 and 21326?

We will first find the prime factorization of 21309 and 21326. After we will calculate the factors of 21309 and 21326 and find the biggest common factor number .

Step-1: Prime Factorization of 21309

Prime factors of 21309 are 3, 7103. Prime factorization of 21309 in exponential form is:

21309 = 3¹ × 7103¹

Step-2: Prime Factorization of 21326

Prime factors of 21326 are 2, 10663. Prime factorization of 21326 in exponential form is:

21326 = 2¹ × 10663¹

Step-3: Factors of 21309

List of positive integer factors of 21309 that divides 21309 without a remainder.

1, 3, 7103

Step-4: Factors of 21326

List of positive integer factors of 21326 that divides 21309 without a remainder.

1, 2, 10663

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21309 and 21326. The biggest common factor number is the GCF number.
So the greatest common factor 21309 and 21326 is 1.

Also check out the Least Common Multiple of 21309 and 21326