What is the Greatest Common Factor of 78155 and 78173?

Greatest common factor (GCF) of 78155 and 78173 is 1.

GCF(78155,78173) = 1

We will now calculate the prime factors of 78155 and 78173, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78155 and 78173.

How to find the GCF of 78155 and 78173?

We will first find the prime factorization of 78155 and 78173. After we will calculate the factors of 78155 and 78173 and find the biggest common factor number .

Step-1: Prime Factorization of 78155

Prime factors of 78155 are 5, 7, 11, 29. Prime factorization of 78155 in exponential form is:

78155 = 5¹ × 7² × 11¹ × 29¹

Step-2: Prime Factorization of 78173

Prime factors of 78173 are 78173. Prime factorization of 78173 in exponential form is:

78173 = 78173¹

Step-3: Factors of 78155

List of positive integer factors of 78155 that divides 78155 without a remainder.

1, 5, 7, 11, 29, 35, 49, 55, 77, 145, 203, 245, 319, 385, 539, 1015, 1421, 1595, 2233, 2695, 7105, 11165, 15631

Step-4: Factors of 78173

List of positive integer factors of 78173 that divides 78155 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78155 and 78173. The biggest common factor number is the GCF number.
So the greatest common factor 78155 and 78173 is 1.

Also check out the Least Common Multiple of 78155 and 78173