What is the Greatest Common Factor of 81138 and 81155?

Greatest common factor (GCF) of 81138 and 81155 is 1.

GCF(81138,81155) = 1

We will now calculate the prime factors of 81138 and 81155, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81138 and 81155.

How to find the GCF of 81138 and 81155?

We will first find the prime factorization of 81138 and 81155. After we will calculate the factors of 81138 and 81155 and find the biggest common factor number .

Step-1: Prime Factorization of 81138

Prime factors of 81138 are 2, 3, 13523. Prime factorization of 81138 in exponential form is:

81138 = 2¹ × 3¹ × 13523¹

Step-2: Prime Factorization of 81155

Prime factors of 81155 are 5, 16231. Prime factorization of 81155 in exponential form is:

81155 = 5¹ × 16231¹

Step-3: Factors of 81138

List of positive integer factors of 81138 that divides 81138 without a remainder.

1, 2, 3, 6, 13523, 27046, 40569

Step-4: Factors of 81155

List of positive integer factors of 81155 that divides 81138 without a remainder.

1, 5, 16231

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81138 and 81155. The biggest common factor number is the GCF number.
So the greatest common factor 81138 and 81155 is 1.

Also check out the Least Common Multiple of 81138 and 81155