What is the Greatest Common Factor of 78424 and 78428?

Greatest common factor (GCF) of 78424 and 78428 is 4.

GCF(78424,78428) = 4

We will now calculate the prime factors of 78424 and 78428, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78424 and 78428.

How to find the GCF of 78424 and 78428?

We will first find the prime factorization of 78424 and 78428. After we will calculate the factors of 78424 and 78428 and find the biggest common factor number .

Step-1: Prime Factorization of 78424

Prime factors of 78424 are 2, 9803. Prime factorization of 78424 in exponential form is:

78424 = 2³ × 9803¹

Step-2: Prime Factorization of 78428

Prime factors of 78428 are 2, 7, 2801. Prime factorization of 78428 in exponential form is:

78428 = 2² × 7¹ × 2801¹

Step-3: Factors of 78424

List of positive integer factors of 78424 that divides 78424 without a remainder.

1, 2, 4, 8, 9803, 19606, 39212

Step-4: Factors of 78428

List of positive integer factors of 78428 that divides 78424 without a remainder.

1, 2, 4, 7, 14, 28, 2801, 5602, 11204, 19607, 39214

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78424 and 78428. The biggest common factor number is the GCF number.
So the greatest common factor 78424 and 78428 is 4.

Also check out the Least Common Multiple of 78424 and 78428