What is the Greatest Common Factor of 91638 and 91647?

Greatest common factor (GCF) of 91638 and 91647 is 9.

GCF(91638,91647) = 9

We will now calculate the prime factors of 91638 and 91647, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91638 and 91647.

How to find the GCF of 91638 and 91647?

We will first find the prime factorization of 91638 and 91647. After we will calculate the factors of 91638 and 91647 and find the biggest common factor number .

Step-1: Prime Factorization of 91638

Prime factors of 91638 are 2, 3, 1697. Prime factorization of 91638 in exponential form is:

91638 = 2¹ × 3³ × 1697¹

Step-2: Prime Factorization of 91647

Prime factors of 91647 are 3, 17, 599. Prime factorization of 91647 in exponential form is:

91647 = 3² × 17¹ × 599¹

Step-3: Factors of 91638

List of positive integer factors of 91638 that divides 91638 without a remainder.

1, 2, 3, 6, 9, 18, 27, 54, 1697, 3394, 5091, 10182, 15273, 30546, 45819

Step-4: Factors of 91647

List of positive integer factors of 91647 that divides 91638 without a remainder.

1, 3, 9, 17, 51, 153, 599, 1797, 5391, 10183, 30549

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 91638 and 91647. The biggest common factor number is the GCF number.
So the greatest common factor 91638 and 91647 is 9.

Also check out the Least Common Multiple of 91638 and 91647