What is the Greatest Common Factor of 15663 and 15681?

Greatest common factor (GCF) of 15663 and 15681 is 3.

GCF(15663,15681) = 3

We will now calculate the prime factors of 15663 and 15681, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15663 and 15681.

How to find the GCF of 15663 and 15681?

We will first find the prime factorization of 15663 and 15681. After we will calculate the factors of 15663 and 15681 and find the biggest common factor number .

Step-1: Prime Factorization of 15663

Prime factors of 15663 are 3, 23, 227. Prime factorization of 15663 in exponential form is:

15663 = 3¹ × 23¹ × 227¹

Step-2: Prime Factorization of 15681

Prime factors of 15681 are 3, 5227. Prime factorization of 15681 in exponential form is:

15681 = 3¹ × 5227¹

Step-3: Factors of 15663

List of positive integer factors of 15663 that divides 15663 without a remainder.

1, 3, 23, 69, 227, 681, 5221

Step-4: Factors of 15681

List of positive integer factors of 15681 that divides 15663 without a remainder.

1, 3, 5227

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15663 and 15681. The biggest common factor number is the GCF number.
So the greatest common factor 15663 and 15681 is 3.

Also check out the Least Common Multiple of 15663 and 15681