What is the Greatest Common Factor of 15811 and 15815?

Greatest common factor (GCF) of 15811 and 15815 is 1.

GCF(15811,15815) = 1

We will now calculate the prime factors of 15811 and 15815, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15811 and 15815.

How to find the GCF of 15811 and 15815?

We will first find the prime factorization of 15811 and 15815. After we will calculate the factors of 15811 and 15815 and find the biggest common factor number .

Step-1: Prime Factorization of 15811

Prime factors of 15811 are 97, 163. Prime factorization of 15811 in exponential form is:

15811 = 97¹ × 163¹

Step-2: Prime Factorization of 15815

Prime factors of 15815 are 5, 3163. Prime factorization of 15815 in exponential form is:

15815 = 5¹ × 3163¹

Step-3: Factors of 15811

List of positive integer factors of 15811 that divides 15811 without a remainder.

1, 97, 163

Step-4: Factors of 15815

List of positive integer factors of 15815 that divides 15811 without a remainder.

1, 5, 3163

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15811 and 15815. The biggest common factor number is the GCF number.
So the greatest common factor 15811 and 15815 is 1.

Also check out the Least Common Multiple of 15811 and 15815