What is the Greatest Common Factor of 21815 and 21832?

Greatest common factor (GCF) of 21815 and 21832 is 1.

GCF(21815,21832) = 1

We will now calculate the prime factors of 21815 and 21832, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21815 and 21832.

How to find the GCF of 21815 and 21832?

We will first find the prime factorization of 21815 and 21832. After we will calculate the factors of 21815 and 21832 and find the biggest common factor number .

Step-1: Prime Factorization of 21815

Prime factors of 21815 are 5, 4363. Prime factorization of 21815 in exponential form is:

21815 = 5¹ × 4363¹

Step-2: Prime Factorization of 21832

Prime factors of 21832 are 2, 2729. Prime factorization of 21832 in exponential form is:

21832 = 2³ × 2729¹

Step-3: Factors of 21815

List of positive integer factors of 21815 that divides 21815 without a remainder.

1, 5, 4363

Step-4: Factors of 21832

List of positive integer factors of 21832 that divides 21815 without a remainder.

1, 2, 4, 8, 2729, 5458, 10916

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21815 and 21832. The biggest common factor number is the GCF number.
So the greatest common factor 21815 and 21832 is 1.

Also check out the Least Common Multiple of 21815 and 21832