What is the Greatest Common Factor of 12221 and 12240?

Greatest common factor (GCF) of 12221 and 12240 is 1.

GCF(12221,12240) = 1

We will now calculate the prime factors of 12221 and 12240, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12221 and 12240.

How to find the GCF of 12221 and 12240?

We will first find the prime factorization of 12221 and 12240. After we will calculate the factors of 12221 and 12240 and find the biggest common factor number .

Step-1: Prime Factorization of 12221

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

12221 = 11² × 101¹

Step-2: Prime Factorization of 12240

Prime factors of 12240 are 2, 3, 5, 17. Prime factorization of 12240 in exponential form is:

12240 = 2⁴ × 3² × 5¹ × 17¹

Step-3: Factors of 12221

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

1, 11, 101, 121, 1111

Step-4: Factors of 12240

List of positive integer factors of 12240 that divides 12221 without a remainder.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 102, 120, 136, 144, 153, 170, 180, 204, 240, 255, 272, 306, 340, 360, 408, 510, 612, 680, 720, 765, 816, 1020, 1224, 1360, 1530, 2040, 2448, 3060, 4080, 6120

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12221 and 12240. The biggest common factor number is the GCF number.
So the greatest common factor 12221 and 12240 is 1.

Also check out the Least Common Multiple of 12221 and 12240