What is the Greatest Common Factor of 81255 and 81261?

Greatest common factor (GCF) of 81255 and 81261 is 3.

GCF(81255,81261) = 3

We will now calculate the prime factors of 81255 and 81261, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81255 and 81261.

How to find the GCF of 81255 and 81261?

We will first find the prime factorization of 81255 and 81261. After we will calculate the factors of 81255 and 81261 and find the biggest common factor number .

Step-1: Prime Factorization of 81255

Prime factors of 81255 are 3, 5, 5417. Prime factorization of 81255 in exponential form is:

81255 = 3¹ × 5¹ × 5417¹

Step-2: Prime Factorization of 81261

Prime factors of 81261 are 3, 9029. Prime factorization of 81261 in exponential form is:

81261 = 3² × 9029¹

Step-3: Factors of 81255

List of positive integer factors of 81255 that divides 81255 without a remainder.

1, 3, 5, 15, 5417, 16251, 27085

Step-4: Factors of 81261

List of positive integer factors of 81261 that divides 81255 without a remainder.

1, 3, 9, 9029, 27087

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81255 and 81261. The biggest common factor number is the GCF number.
So the greatest common factor 81255 and 81261 is 3.

Also check out the Least Common Multiple of 81255 and 81261