What is the Greatest Common Factor of 78659 and 78666?

Greatest common factor (GCF) of 78659 and 78666 is 7.

GCF(78659,78666) = 7

We will now calculate the prime factors of 78659 and 78666, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78659 and 78666.

How to find the GCF of 78659 and 78666?

We will first find the prime factorization of 78659 and 78666. After we will calculate the factors of 78659 and 78666 and find the biggest common factor number .

Step-1: Prime Factorization of 78659

Prime factors of 78659 are 7, 17, 661. Prime factorization of 78659 in exponential form is:

78659 = 7¹ × 17¹ × 661¹

Step-2: Prime Factorization of 78666

Prime factors of 78666 are 2, 3, 7, 1873. Prime factorization of 78666 in exponential form is:

78666 = 2¹ × 3¹ × 7¹ × 1873¹

Step-3: Factors of 78659

List of positive integer factors of 78659 that divides 78659 without a remainder.

1, 7, 17, 119, 661, 4627, 11237

Step-4: Factors of 78666

List of positive integer factors of 78666 that divides 78659 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42, 1873, 3746, 5619, 11238, 13111, 26222, 39333

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78659 and 78666. The biggest common factor number is the GCF number.
So the greatest common factor 78659 and 78666 is 7.

Also check out the Least Common Multiple of 78659 and 78666