What is the Greatest Common Factor of 12210 and 12218?

Greatest common factor (GCF) of 12210 and 12218 is 2.

GCF(12210,12218) = 2

We will now calculate the prime factors of 12210 and 12218, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12210 and 12218.

How to find the GCF of 12210 and 12218?

We will first find the prime factorization of 12210 and 12218. After we will calculate the factors of 12210 and 12218 and find the biggest common factor number .

Step-1: Prime Factorization of 12210

Prime factors of 12210 are 2, 3, 5, 11, 37. Prime factorization of 12210 in exponential form is:

12210 = 2¹ × 3¹ × 5¹ × 11¹ × 37¹

Step-2: Prime Factorization of 12218

Prime factors of 12218 are 2, 41, 149. Prime factorization of 12218 in exponential form is:

12218 = 2¹ × 41¹ × 149¹

Step-3: Factors of 12210

List of positive integer factors of 12210 that divides 12210 without a remainder.

1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 37, 55, 66, 74, 110, 111, 165, 185, 222, 330, 370, 407, 555, 814, 1110, 1221, 2035, 2442, 4070, 6105

Step-4: Factors of 12218

List of positive integer factors of 12218 that divides 12210 without a remainder.

1, 2, 41, 82, 149, 298, 6109

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12210 and 12218. The biggest common factor number is the GCF number.
So the greatest common factor 12210 and 12218 is 2.

Also check out the Least Common Multiple of 12210 and 12218