What is the Greatest Common Factor of 21831 and 21839?

Greatest common factor (GCF) of 21831 and 21839 is 1.

GCF(21831,21839) = 1

We will now calculate the prime factors of 21831 and 21839, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21831 and 21839.

How to find the GCF of 21831 and 21839?

We will first find the prime factorization of 21831 and 21839. After we will calculate the factors of 21831 and 21839 and find the biggest common factor number .

Step-1: Prime Factorization of 21831

Prime factors of 21831 are 3, 19, 383. Prime factorization of 21831 in exponential form is:

21831 = 3¹ × 19¹ × 383¹

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 21831

List of positive integer factors of 21831 that divides 21831 without a remainder.

1, 3, 19, 57, 383, 1149, 7277

Step-4: Factors of 21839

List of positive integer factors of 21839 that divides 21831 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21831 and 21839. The biggest common factor number is the GCF number.
So the greatest common factor 21831 and 21839 is 1.

Also check out the Least Common Multiple of 21831 and 21839