What is the Greatest Common Factor of 19830 and 19839?

Greatest common factor (GCF) of 19830 and 19839 is 3.

GCF(19830,19839) = 3

We will now calculate the prime factors of 19830 and 19839, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19830 and 19839.

How to find the GCF of 19830 and 19839?

We will first find the prime factorization of 19830 and 19839. After we will calculate the factors of 19830 and 19839 and find the biggest common factor number .

Step-1: Prime Factorization of 19830

Prime factors of 19830 are 2, 3, 5, 661. Prime factorization of 19830 in exponential form is:

19830 = 2¹ × 3¹ × 5¹ × 661¹

Step-2: Prime Factorization of 19839

Prime factors of 19839 are 3, 17, 389. Prime factorization of 19839 in exponential form is:

19839 = 3¹ × 17¹ × 389¹

Step-3: Factors of 19830

List of positive integer factors of 19830 that divides 19830 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 661, 1322, 1983, 3305, 3966, 6610, 9915

Step-4: Factors of 19839

List of positive integer factors of 19839 that divides 19830 without a remainder.

1, 3, 17, 51, 389, 1167, 6613

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19830 and 19839. The biggest common factor number is the GCF number.
So the greatest common factor 19830 and 19839 is 3.

Also check out the Least Common Multiple of 19830 and 19839