What is the Greatest Common Factor of 81105 and 81123?

Greatest common factor (GCF) of 81105 and 81123 is 3.

GCF(81105,81123) = 3

We will now calculate the prime factors of 81105 and 81123, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81105 and 81123.

How to find the GCF of 81105 and 81123?

We will first find the prime factorization of 81105 and 81123. After we will calculate the factors of 81105 and 81123 and find the biggest common factor number .

Step-1: Prime Factorization of 81105

Prime factors of 81105 are 3, 5, 5407. Prime factorization of 81105 in exponential form is:

81105 = 3¹ × 5¹ × 5407¹

Step-2: Prime Factorization of 81123

Prime factors of 81123 are 3, 7, 3863. Prime factorization of 81123 in exponential form is:

81123 = 3¹ × 7¹ × 3863¹

Step-3: Factors of 81105

List of positive integer factors of 81105 that divides 81105 without a remainder.

1, 3, 5, 15, 5407, 16221, 27035

Step-4: Factors of 81123

List of positive integer factors of 81123 that divides 81105 without a remainder.

1, 3, 7, 21, 3863, 11589, 27041

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81105 and 81123. The biggest common factor number is the GCF number.
So the greatest common factor 81105 and 81123 is 3.

Also check out the Least Common Multiple of 81105 and 81123