What is the Greatest Common Factor of 99915 and 99930?

Greatest common factor (GCF) of 99915 and 99930 is 15.

GCF(99915,99930) = 15

We will now calculate the prime factors of 99915 and 99930, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 99915 and 99930.

How to find the GCF of 99915 and 99930?

We will first find the prime factorization of 99915 and 99930. After we will calculate the factors of 99915 and 99930 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 99930

Prime factors of 99930 are 2, 3, 5, 3331. Prime factorization of 99930 in exponential form is:

99930 = 2¹ × 3¹ × 5¹ × 3331¹

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 99930

List of positive integer factors of 99930 that divides 99915 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 3331, 6662, 9993, 16655, 19986, 33310, 49965

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 99915 and 99930. The biggest common factor number is the GCF number.
So the greatest common factor 99915 and 99930 is 15.

Also check out the Least Common Multiple of 99915 and 99930