What is the Greatest Common Factor of 78628 and 78639?

Greatest common factor (GCF) of 78628 and 78639 is 11.

GCF(78628,78639) = 11

We will now calculate the prime factors of 78628 and 78639, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78628 and 78639.

How to find the GCF of 78628 and 78639?

We will first find the prime factorization of 78628 and 78639. After we will calculate the factors of 78628 and 78639 and find the biggest common factor number .

Step-1: Prime Factorization of 78628

Prime factors of 78628 are 2, 11, 1787. Prime factorization of 78628 in exponential form is:

78628 = 2² × 11¹ × 1787¹

Step-2: Prime Factorization of 78639

Prime factors of 78639 are 3, 11, 2383. Prime factorization of 78639 in exponential form is:

78639 = 3¹ × 11¹ × 2383¹

Step-3: Factors of 78628

List of positive integer factors of 78628 that divides 78628 without a remainder.

1, 2, 4, 11, 22, 44, 1787, 3574, 7148, 19657, 39314

Step-4: Factors of 78639

List of positive integer factors of 78639 that divides 78628 without a remainder.

1, 3, 11, 33, 2383, 7149, 26213

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78628 and 78639. The biggest common factor number is the GCF number.
So the greatest common factor 78628 and 78639 is 11.

Also check out the Least Common Multiple of 78628 and 78639