What is the Greatest Common Factor of 81405 and 81412?

Greatest common factor (GCF) of 81405 and 81412 is 1.

GCF(81405,81412) = 1

We will now calculate the prime factors of 81405 and 81412, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81405 and 81412.

How to find the GCF of 81405 and 81412?

We will first find the prime factorization of 81405 and 81412. After we will calculate the factors of 81405 and 81412 and find the biggest common factor number .

Step-1: Prime Factorization of 81405

Prime factors of 81405 are 3, 5, 67. Prime factorization of 81405 in exponential form is:

81405 = 3⁵ × 5¹ × 67¹

Step-2: Prime Factorization of 81412

Prime factors of 81412 are 2, 20353. Prime factorization of 81412 in exponential form is:

81412 = 2² × 20353¹

Step-3: Factors of 81405

List of positive integer factors of 81405 that divides 81405 without a remainder.

1, 3, 5, 9, 15, 27, 45, 67, 81, 135, 201, 243, 335, 405, 603, 1005, 1215, 1809, 3015, 5427, 9045, 16281, 27135

Step-4: Factors of 81412

List of positive integer factors of 81412 that divides 81405 without a remainder.

1, 2, 4, 20353, 40706

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81405 and 81412. The biggest common factor number is the GCF number.
So the greatest common factor 81405 and 81412 is 1.

Also check out the Least Common Multiple of 81405 and 81412