What is the Greatest Common Factor of 45405 and 45420?

Greatest common factor (GCF) of 45405 and 45420 is 15.

GCF(45405,45420) = 15

We will now calculate the prime factors of 45405 and 45420, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 45405 and 45420.

How to find the GCF of 45405 and 45420?

We will first find the prime factorization of 45405 and 45420. After we will calculate the factors of 45405 and 45420 and find the biggest common factor number .

Step-1: Prime Factorization of 45405

Prime factors of 45405 are 3, 5, 1009. Prime factorization of 45405 in exponential form is:

45405 = 3² × 5¹ × 1009¹

Step-2: Prime Factorization of 45420

Prime factors of 45420 are 2, 3, 5, 757. Prime factorization of 45420 in exponential form is:

45420 = 2² × 3¹ × 5¹ × 757¹

Step-3: Factors of 45405

List of positive integer factors of 45405 that divides 45405 without a remainder.

1, 3, 5, 9, 15, 45, 1009, 3027, 5045, 9081, 15135

Step-4: Factors of 45420

List of positive integer factors of 45420 that divides 45405 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 757, 1514, 2271, 3028, 3785, 4542, 7570, 9084, 11355, 15140, 22710

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 45405 and 45420. The biggest common factor number is the GCF number.
So the greatest common factor 45405 and 45420 is 15.

Also check out the Least Common Multiple of 45405 and 45420