What is the Greatest Common Factor of 78589 and 78605?

Greatest common factor (GCF) of 78589 and 78605 is 1.

GCF(78589,78605) = 1

We will now calculate the prime factors of 78589 and 78605, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78589 and 78605.

How to find the GCF of 78589 and 78605?

We will first find the prime factorization of 78589 and 78605. After we will calculate the factors of 78589 and 78605 and find the biggest common factor number .

Step-1: Prime Factorization of 78589

Prime factors of 78589 are 7, 103, 109. Prime factorization of 78589 in exponential form is:

78589 = 7¹ × 103¹ × 109¹

Step-2: Prime Factorization of 78605

Prime factors of 78605 are 5, 79, 199. Prime factorization of 78605 in exponential form is:

78605 = 5¹ × 79¹ × 199¹

Step-3: Factors of 78589

List of positive integer factors of 78589 that divides 78589 without a remainder.

1, 7, 103, 109, 721, 763, 11227

Step-4: Factors of 78605

List of positive integer factors of 78605 that divides 78589 without a remainder.

1, 5, 79, 199, 395, 995, 15721

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78589 and 78605. The biggest common factor number is the GCF number.
So the greatest common factor 78589 and 78605 is 1.

Also check out the Least Common Multiple of 78589 and 78605