What is the Greatest Common Factor of 99405 and 99420?

Greatest common factor (GCF) of 99405 and 99420 is 15.

GCF(99405,99420) = 15

We will now calculate the prime factors of 99405 and 99420, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 99405 and 99420.

How to find the GCF of 99405 and 99420?

We will first find the prime factorization of 99405 and 99420. After we will calculate the factors of 99405 and 99420 and find the biggest common factor number .

Step-1: Prime Factorization of 99405

Prime factors of 99405 are 3, 5, 47. Prime factorization of 99405 in exponential form is:

99405 = 3² × 5¹ × 47²

Step-2: Prime Factorization of 99420

Prime factors of 99420 are 2, 3, 5, 1657. Prime factorization of 99420 in exponential form is:

99420 = 2² × 3¹ × 5¹ × 1657¹

Step-3: Factors of 99405

List of positive integer factors of 99405 that divides 99405 without a remainder.

1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 2209, 6627, 11045, 19881, 33135

Step-4: Factors of 99420

List of positive integer factors of 99420 that divides 99405 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1657, 3314, 4971, 6628, 8285, 9942, 16570, 19884, 24855, 33140, 49710

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 99405 and 99420. The biggest common factor number is the GCF number.
So the greatest common factor 99405 and 99420 is 15.

Also check out the Least Common Multiple of 99405 and 99420