What is the Greatest Common Factor of 80685 and 80691?

Greatest common factor (GCF) of 80685 and 80691 is 3.

GCF(80685,80691) = 3

We will now calculate the prime factors of 80685 and 80691, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 80685 and 80691.

How to find the GCF of 80685 and 80691?

We will first find the prime factorization of 80685 and 80691. After we will calculate the factors of 80685 and 80691 and find the biggest common factor number .

Step-1: Prime Factorization of 80685

Prime factors of 80685 are 3, 5, 11, 163. Prime factorization of 80685 in exponential form is:

80685 = 3² × 5¹ × 11¹ × 163¹

Step-2: Prime Factorization of 80691

Prime factors of 80691 are 3, 13, 2069. Prime factorization of 80691 in exponential form is:

80691 = 3¹ × 13¹ × 2069¹

Step-3: Factors of 80685

List of positive integer factors of 80685 that divides 80685 without a remainder.

1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 163, 165, 489, 495, 815, 1467, 1793, 2445, 5379, 7335, 8965, 16137, 26895

Step-4: Factors of 80691

List of positive integer factors of 80691 that divides 80685 without a remainder.

1, 3, 13, 39, 2069, 6207, 26897

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 80685 and 80691. The biggest common factor number is the GCF number.
So the greatest common factor 80685 and 80691 is 3.

Also check out the Least Common Multiple of 80685 and 80691