What is the Greatest Common Factor of 81366 and 81381?

Greatest common factor (GCF) of 81366 and 81381 is 3.

GCF(81366,81381) = 3

We will now calculate the prime factors of 81366 and 81381, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81366 and 81381.

How to find the GCF of 81366 and 81381?

We will first find the prime factorization of 81366 and 81381. After we will calculate the factors of 81366 and 81381 and find the biggest common factor number .

Step-1: Prime Factorization of 81366

Prime factors of 81366 are 2, 3, 71, 191. Prime factorization of 81366 in exponential form is:

81366 = 2¹ × 3¹ × 71¹ × 191¹

Step-2: Prime Factorization of 81381

Prime factors of 81381 are 3, 27127. Prime factorization of 81381 in exponential form is:

81381 = 3¹ × 27127¹

Step-3: Factors of 81366

List of positive integer factors of 81366 that divides 81366 without a remainder.

1, 2, 3, 6, 71, 142, 191, 213, 382, 426, 573, 1146, 13561, 27122, 40683

Step-4: Factors of 81381

List of positive integer factors of 81381 that divides 81366 without a remainder.

1, 3, 27127

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81366 and 81381. The biggest common factor number is the GCF number.
So the greatest common factor 81366 and 81381 is 3.

Also check out the Least Common Multiple of 81366 and 81381