What is the Greatest Common Factor of 25209 and 25215?

Greatest common factor (GCF) of 25209 and 25215 is 3.

GCF(25209,25215) = 3

We will now calculate the prime factors of 25209 and 25215, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25209 and 25215.

How to find the GCF of 25209 and 25215?

We will first find the prime factorization of 25209 and 25215. After we will calculate the factors of 25209 and 25215 and find the biggest common factor number .

Step-1: Prime Factorization of 25209

Prime factors of 25209 are 3, 2801. Prime factorization of 25209 in exponential form is:

25209 = 3² × 2801¹

Step-2: Prime Factorization of 25215

Prime factors of 25215 are 3, 5, 41. Prime factorization of 25215 in exponential form is:

25215 = 3¹ × 5¹ × 41²

Step-3: Factors of 25209

List of positive integer factors of 25209 that divides 25209 without a remainder.

1, 3, 9, 2801, 8403

Step-4: Factors of 25215

List of positive integer factors of 25215 that divides 25209 without a remainder.

1, 3, 5, 15, 41, 123, 205, 615, 1681, 5043, 8405

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25209 and 25215. The biggest common factor number is the GCF number.
So the greatest common factor 25209 and 25215 is 3.

Also check out the Least Common Multiple of 25209 and 25215