What is the Greatest Common Factor of 78918 and 78938?

Greatest common factor (GCF) of 78918 and 78938 is 2.

GCF(78918,78938) = 2

We will now calculate the prime factors of 78918 and 78938, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78918 and 78938.

How to find the GCF of 78918 and 78938?

We will first find the prime factorization of 78918 and 78938. After we will calculate the factors of 78918 and 78938 and find the biggest common factor number .

Step-1: Prime Factorization of 78918

Prime factors of 78918 are 2, 3, 7, 1879. Prime factorization of 78918 in exponential form is:

78918 = 2¹ × 3¹ × 7¹ × 1879¹

Step-2: Prime Factorization of 78938

Prime factors of 78938 are 2, 29, 1361. Prime factorization of 78938 in exponential form is:

78938 = 2¹ × 29¹ × 1361¹

Step-3: Factors of 78918

List of positive integer factors of 78918 that divides 78918 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42, 1879, 3758, 5637, 11274, 13153, 26306, 39459

Step-4: Factors of 78938

List of positive integer factors of 78938 that divides 78918 without a remainder.

1, 2, 29, 58, 1361, 2722, 39469

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78918 and 78938. The biggest common factor number is the GCF number.
So the greatest common factor 78918 and 78938 is 2.

Also check out the Least Common Multiple of 78918 and 78938