What is the Greatest Common Factor of 21823 and 21839?

Greatest common factor (GCF) of 21823 and 21839 is 1.

GCF(21823,21839) = 1

We will now calculate the prime factors of 21823 and 21839, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21823 and 21839.

How to find the GCF of 21823 and 21839?

We will first find the prime factorization of 21823 and 21839. After we will calculate the factors of 21823 and 21839 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 21839

Prime factors of 21839 are 21839. Prime factorization of 21839 in exponential form is:

21839 = 21839¹

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 21839

List of positive integer factors of 21839 that divides 21823 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21823 and 21839. The biggest common factor number is the GCF number.
So the greatest common factor 21823 and 21839 is 1.

Also check out the Least Common Multiple of 21823 and 21839