What is the Greatest Common Factor of 11815 and 11821?

Greatest common factor (GCF) of 11815 and 11821 is 1.

GCF(11815,11821) = 1

We will now calculate the prime factors of 11815 and 11821, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 11815 and 11821.

How to find the GCF of 11815 and 11821?

We will first find the prime factorization of 11815 and 11821. After we will calculate the factors of 11815 and 11821 and find the biggest common factor number .

Step-1: Prime Factorization of 11815

Prime factors of 11815 are 5, 17, 139. Prime factorization of 11815 in exponential form is:

11815 = 5¹ × 17¹ × 139¹

Step-2: Prime Factorization of 11821

Prime factors of 11821 are 11821. Prime factorization of 11821 in exponential form is:

11821 = 11821¹

Step-3: Factors of 11815

List of positive integer factors of 11815 that divides 11815 without a remainder.

1, 5, 17, 85, 139, 695, 2363

Step-4: Factors of 11821

List of positive integer factors of 11821 that divides 11815 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 11815 and 11821. The biggest common factor number is the GCF number.
So the greatest common factor 11815 and 11821 is 1.

Also check out the Least Common Multiple of 11815 and 11821