What is the Greatest Common Factor of 72405 and 72421?

Greatest common factor (GCF) of 72405 and 72421 is 1.

GCF(72405,72421) = 1

We will now calculate the prime factors of 72405 and 72421, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72405 and 72421.

How to find the GCF of 72405 and 72421?

We will first find the prime factorization of 72405 and 72421. After we will calculate the factors of 72405 and 72421 and find the biggest common factor number .

Step-1: Prime Factorization of 72405

Prime factors of 72405 are 3, 5, 1609. Prime factorization of 72405 in exponential form is:

72405 = 3² × 5¹ × 1609¹

Step-2: Prime Factorization of 72421

Prime factors of 72421 are 72421. Prime factorization of 72421 in exponential form is:

72421 = 72421¹

Step-3: Factors of 72405

List of positive integer factors of 72405 that divides 72405 without a remainder.

1, 3, 5, 9, 15, 45, 1609, 4827, 8045, 14481, 24135

Step-4: Factors of 72421

List of positive integer factors of 72421 that divides 72405 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72405 and 72421. The biggest common factor number is the GCF number.
So the greatest common factor 72405 and 72421 is 1.

Also check out the Least Common Multiple of 72405 and 72421