What is the Greatest Common Factor of 81809 and 81813?

Greatest common factor (GCF) of 81809 and 81813 is 1.

GCF(81809,81813) = 1

We will now calculate the prime factors of 81809 and 81813, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81809 and 81813.

How to find the GCF of 81809 and 81813?

We will first find the prime factorization of 81809 and 81813. After we will calculate the factors of 81809 and 81813 and find the biggest common factor number .

Step-1: Prime Factorization of 81809

Prime factors of 81809 are 7, 13, 29, 31. Prime factorization of 81809 in exponential form is:

81809 = 7¹ × 13¹ × 29¹ × 31¹

Step-2: Prime Factorization of 81813

Prime factors of 81813 are 3, 27271. Prime factorization of 81813 in exponential form is:

81813 = 3¹ × 27271¹

Step-3: Factors of 81809

List of positive integer factors of 81809 that divides 81809 without a remainder.

1, 7, 13, 29, 31, 91, 203, 217, 377, 403, 899, 2639, 2821, 6293, 11687

Step-4: Factors of 81813

List of positive integer factors of 81813 that divides 81809 without a remainder.

1, 3, 27271

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81809 and 81813. The biggest common factor number is the GCF number.
So the greatest common factor 81809 and 81813 is 1.

Also check out the Least Common Multiple of 81809 and 81813