What is the Greatest Common Factor of 19839 and 19851?

Greatest common factor (GCF) of 19839 and 19851 is 3.

GCF(19839,19851) = 3

We will now calculate the prime factors of 19839 and 19851, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19839 and 19851.

How to find the GCF of 19839 and 19851?

We will first find the prime factorization of 19839 and 19851. After we will calculate the factors of 19839 and 19851 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 19851

Prime factors of 19851 are 3, 13, 509. Prime factorization of 19851 in exponential form is:

19851 = 3¹ × 13¹ × 509¹

Step-3: Factors of 19839

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

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

Step-4: Factors of 19851

List of positive integer factors of 19851 that divides 19839 without a remainder.

1, 3, 13, 39, 509, 1527, 6617

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19839 and 19851. The biggest common factor number is the GCF number.
So the greatest common factor 19839 and 19851 is 3.

Also check out the Least Common Multiple of 19839 and 19851