What is the Greatest Common Factor of 81489 and 81507?

Greatest common factor (GCF) of 81489 and 81507 is 3.

GCF(81489,81507) = 3

We will now calculate the prime factors of 81489 and 81507, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81489 and 81507.

How to find the GCF of 81489 and 81507?

We will first find the prime factorization of 81489 and 81507. After we will calculate the factors of 81489 and 81507 and find the biggest common factor number .

Step-1: Prime Factorization of 81489

Prime factors of 81489 are 3, 23, 1181. Prime factorization of 81489 in exponential form is:

81489 = 3¹ × 23¹ × 1181¹

Step-2: Prime Factorization of 81507

Prime factors of 81507 are 3, 101, 269. Prime factorization of 81507 in exponential form is:

81507 = 3¹ × 101¹ × 269¹

Step-3: Factors of 81489

List of positive integer factors of 81489 that divides 81489 without a remainder.

1, 3, 23, 69, 1181, 3543, 27163

Step-4: Factors of 81507

List of positive integer factors of 81507 that divides 81489 without a remainder.

1, 3, 101, 269, 303, 807, 27169

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81489 and 81507. The biggest common factor number is the GCF number.
So the greatest common factor 81489 and 81507 is 3.

Also check out the Least Common Multiple of 81489 and 81507