What is the Greatest Common Factor of 78621 and 78636?

Greatest common factor (GCF) of 78621 and 78636 is 3.

GCF(78621,78636) = 3

We will now calculate the prime factors of 78621 and 78636, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78621 and 78636.

How to find the GCF of 78621 and 78636?

We will first find the prime factorization of 78621 and 78636. After we will calculate the factors of 78621 and 78636 and find the biggest common factor number .

Step-1: Prime Factorization of 78621

Prime factors of 78621 are 3, 73, 359. Prime factorization of 78621 in exponential form is:

78621 = 3¹ × 73¹ × 359¹

Step-2: Prime Factorization of 78636

Prime factors of 78636 are 2, 3, 6553. Prime factorization of 78636 in exponential form is:

78636 = 2² × 3¹ × 6553¹

Step-3: Factors of 78621

List of positive integer factors of 78621 that divides 78621 without a remainder.

1, 3, 73, 219, 359, 1077, 26207

Step-4: Factors of 78636

List of positive integer factors of 78636 that divides 78621 without a remainder.

1, 2, 3, 4, 6, 12, 6553, 13106, 19659, 26212, 39318

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78621 and 78636. The biggest common factor number is the GCF number.
So the greatest common factor 78621 and 78636 is 3.

Also check out the Least Common Multiple of 78621 and 78636