What is the Greatest Common Factor of 81709 and 81721?

Greatest common factor (GCF) of 81709 and 81721 is 1.

GCF(81709,81721) = 1

We will now calculate the prime factors of 81709 and 81721, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81709 and 81721.

How to find the GCF of 81709 and 81721?

We will first find the prime factorization of 81709 and 81721. After we will calculate the factors of 81709 and 81721 and find the biggest common factor number .

Step-1: Prime Factorization of 81709

Prime factors of 81709 are 101, 809. Prime factorization of 81709 in exponential form is:

81709 = 101¹ × 809¹

Step-2: Prime Factorization of 81721

Prime factors of 81721 are 71, 1151. Prime factorization of 81721 in exponential form is:

81721 = 71¹ × 1151¹

Step-3: Factors of 81709

List of positive integer factors of 81709 that divides 81709 without a remainder.

1, 101, 809

Step-4: Factors of 81721

List of positive integer factors of 81721 that divides 81709 without a remainder.

1, 71, 1151

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81709 and 81721. The biggest common factor number is the GCF number.
So the greatest common factor 81709 and 81721 is 1.

Also check out the Least Common Multiple of 81709 and 81721