What is the Greatest Common Factor of 19878 and 19892?

Greatest common factor (GCF) of 19878 and 19892 is 2.

GCF(19878,19892) = 2

We will now calculate the prime factors of 19878 and 19892, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19878 and 19892.

How to find the GCF of 19878 and 19892?

We will first find the prime factorization of 19878 and 19892. After we will calculate the factors of 19878 and 19892 and find the biggest common factor number .

Step-1: Prime Factorization of 19878

Prime factors of 19878 are 2, 3, 3313. Prime factorization of 19878 in exponential form is:

19878 = 2¹ × 3¹ × 3313¹

Step-2: Prime Factorization of 19892

Prime factors of 19892 are 2, 4973. Prime factorization of 19892 in exponential form is:

19892 = 2² × 4973¹

Step-3: Factors of 19878

List of positive integer factors of 19878 that divides 19878 without a remainder.

1, 2, 3, 6, 3313, 6626, 9939

Step-4: Factors of 19892

List of positive integer factors of 19892 that divides 19878 without a remainder.

1, 2, 4, 4973, 9946

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19878 and 19892. The biggest common factor number is the GCF number.
So the greatest common factor 19878 and 19892 is 2.

Also check out the Least Common Multiple of 19878 and 19892