What is the Greatest Common Factor of 21823 and 21836?

Greatest common factor (GCF) of 21823 and 21836 is 1.

GCF(21823,21836) = 1

We will now calculate the prime factors of 21823 and 21836, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21823 and 21836.

How to find the GCF of 21823 and 21836?

We will first find the prime factorization of 21823 and 21836. After we will calculate the factors of 21823 and 21836 and find the biggest common factor number .

Step-1: Prime Factorization of 21823

Prime factors of 21823 are 139, 157. Prime factorization of 21823 in exponential form is:

21823 = 139¹ × 157¹

Step-2: Prime Factorization of 21836

Prime factors of 21836 are 2, 53, 103. Prime factorization of 21836 in exponential form is:

21836 = 2² × 53¹ × 103¹

Step-3: Factors of 21823

List of positive integer factors of 21823 that divides 21823 without a remainder.

1, 139, 157

Step-4: Factors of 21836

List of positive integer factors of 21836 that divides 21823 without a remainder.

1, 2, 4, 53, 103, 106, 206, 212, 412, 5459, 10918

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21823 and 21836. The biggest common factor number is the GCF number.
So the greatest common factor 21823 and 21836 is 1.

Also check out the Least Common Multiple of 21823 and 21836