What is the Greatest Common Factor of 12205 and 12215?

Greatest common factor (GCF) of 12205 and 12215 is 5.

GCF(12205,12215) = 5

We will now calculate the prime factors of 12205 and 12215, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12205 and 12215.

How to find the GCF of 12205 and 12215?

We will first find the prime factorization of 12205 and 12215. After we will calculate the factors of 12205 and 12215 and find the biggest common factor number .

Step-1: Prime Factorization of 12205

Prime factors of 12205 are 5, 2441. Prime factorization of 12205 in exponential form is:

12205 = 5¹ × 2441¹

Step-2: Prime Factorization of 12215

Prime factors of 12215 are 5, 7, 349. Prime factorization of 12215 in exponential form is:

12215 = 5¹ × 7¹ × 349¹

Step-3: Factors of 12205

List of positive integer factors of 12205 that divides 12205 without a remainder.

1, 5, 2441

Step-4: Factors of 12215

List of positive integer factors of 12215 that divides 12205 without a remainder.

1, 5, 7, 35, 349, 1745, 2443

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12205 and 12215. The biggest common factor number is the GCF number.
So the greatest common factor 12205 and 12215 is 5.

Also check out the Least Common Multiple of 12205 and 12215