What is the Greatest Common Factor of 99915 and 99921?

Greatest common factor (GCF) of 99915 and 99921 is 3.

GCF(99915,99921) = 3

We will now calculate the prime factors of 99915 and 99921, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 99915 and 99921.

How to find the GCF of 99915 and 99921?

We will first find the prime factorization of 99915 and 99921. After we will calculate the factors of 99915 and 99921 and find the biggest common factor number .

Step-1: Prime Factorization of 99915

Prime factors of 99915 are 3, 5, 6661. Prime factorization of 99915 in exponential form is:

99915 = 3¹ × 5¹ × 6661¹

Step-2: Prime Factorization of 99921

Prime factors of 99921 are 3, 19, 1753. Prime factorization of 99921 in exponential form is:

99921 = 3¹ × 19¹ × 1753¹

Step-3: Factors of 99915

List of positive integer factors of 99915 that divides 99915 without a remainder.

1, 3, 5, 15, 6661, 19983, 33305

Step-4: Factors of 99921

List of positive integer factors of 99921 that divides 99915 without a remainder.

1, 3, 19, 57, 1753, 5259, 33307

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 99915 and 99921. The biggest common factor number is the GCF number.
So the greatest common factor 99915 and 99921 is 3.

Also check out the Least Common Multiple of 99915 and 99921