What is the Greatest Common Factor of 78172 and 78178?

Greatest common factor (GCF) of 78172 and 78178 is 2.

GCF(78172,78178) = 2

We will now calculate the prime factors of 78172 and 78178, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78172 and 78178.

How to find the GCF of 78172 and 78178?

We will first find the prime factorization of 78172 and 78178. After we will calculate the factors of 78172 and 78178 and find the biggest common factor number .

Step-1: Prime Factorization of 78172

Prime factors of 78172 are 2, 19543. Prime factorization of 78172 in exponential form is:

78172 = 2² × 19543¹

Step-2: Prime Factorization of 78178

Prime factors of 78178 are 2, 39089. Prime factorization of 78178 in exponential form is:

78178 = 2¹ × 39089¹

Step-3: Factors of 78172

List of positive integer factors of 78172 that divides 78172 without a remainder.

1, 2, 4, 19543, 39086

Step-4: Factors of 78178

List of positive integer factors of 78178 that divides 78172 without a remainder.

1, 2, 39089

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78172 and 78178. The biggest common factor number is the GCF number.
So the greatest common factor 78172 and 78178 is 2.

Also check out the Least Common Multiple of 78172 and 78178