What is the Greatest Common Factor of 81123 and 81135?

Greatest common factor (GCF) of 81123 and 81135 is 3.

GCF(81123,81135) = 3

We will now calculate the prime factors of 81123 and 81135, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81123 and 81135.

How to find the GCF of 81123 and 81135?

We will first find the prime factorization of 81123 and 81135. After we will calculate the factors of 81123 and 81135 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 81135

Prime factors of 81135 are 3, 5, 601. Prime factorization of 81135 in exponential form is:

81135 = 3³ × 5¹ × 601¹

Step-3: Factors of 81123

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

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

Step-4: Factors of 81135

List of positive integer factors of 81135 that divides 81123 without a remainder.

1, 3, 5, 9, 15, 27, 45, 135, 601, 1803, 3005, 5409, 9015, 16227, 27045

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81123 and 81135. The biggest common factor number is the GCF number.
So the greatest common factor 81123 and 81135 is 3.

Also check out the Least Common Multiple of 81123 and 81135