What is the Greatest Common Factor of 12216 and 12221?

Greatest common factor (GCF) of 12216 and 12221 is 1.

GCF(12216,12221) = 1

We will now calculate the prime factors of 12216 and 12221, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12216 and 12221.

How to find the GCF of 12216 and 12221?

We will first find the prime factorization of 12216 and 12221. After we will calculate the factors of 12216 and 12221 and find the biggest common factor number .

Step-1: Prime Factorization of 12216

Prime factors of 12216 are 2, 3, 509. Prime factorization of 12216 in exponential form is:

12216 = 2³ × 3¹ × 509¹

Step-2: Prime Factorization of 12221

Prime factors of 12221 are 11, 101. Prime factorization of 12221 in exponential form is:

12221 = 11² × 101¹

Step-3: Factors of 12216

List of positive integer factors of 12216 that divides 12216 without a remainder.

1, 2, 3, 4, 6, 8, 12, 24, 509, 1018, 1527, 2036, 3054, 4072, 6108

Step-4: Factors of 12221

List of positive integer factors of 12221 that divides 12216 without a remainder.

1, 11, 101, 121, 1111

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12216 and 12221. The biggest common factor number is the GCF number.
So the greatest common factor 12216 and 12221 is 1.

Also check out the Least Common Multiple of 12216 and 12221