What is the Greatest Common Factor of 15285 and 15305?

Greatest common factor (GCF) of 15285 and 15305 is 5.

GCF(15285,15305) = 5

We will now calculate the prime factors of 15285 and 15305, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15285 and 15305.

How to find the GCF of 15285 and 15305?

We will first find the prime factorization of 15285 and 15305. After we will calculate the factors of 15285 and 15305 and find the biggest common factor number .

Step-1: Prime Factorization of 15285

Prime factors of 15285 are 3, 5, 1019. Prime factorization of 15285 in exponential form is:

15285 = 3¹ × 5¹ × 1019¹

Step-2: Prime Factorization of 15305

Prime factors of 15305 are 5, 3061. Prime factorization of 15305 in exponential form is:

15305 = 5¹ × 3061¹

Step-3: Factors of 15285

List of positive integer factors of 15285 that divides 15285 without a remainder.

1, 3, 5, 15, 1019, 3057, 5095

Step-4: Factors of 15305

List of positive integer factors of 15305 that divides 15285 without a remainder.

1, 5, 3061

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15285 and 15305. The biggest common factor number is the GCF number.
So the greatest common factor 15285 and 15305 is 5.

Also check out the Least Common Multiple of 15285 and 15305