What is the Greatest Common Factor of 13855 and 13872?

Greatest common factor (GCF) of 13855 and 13872 is 17.

GCF(13855,13872) = 17

We will now calculate the prime factors of 13855 and 13872, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 13855 and 13872.

How to find the GCF of 13855 and 13872?

We will first find the prime factorization of 13855 and 13872. After we will calculate the factors of 13855 and 13872 and find the biggest common factor number .

Step-1: Prime Factorization of 13855

Prime factors of 13855 are 5, 17, 163. Prime factorization of 13855 in exponential form is:

13855 = 5¹ × 17¹ × 163¹

Step-2: Prime Factorization of 13872

Prime factors of 13872 are 2, 3, 17. Prime factorization of 13872 in exponential form is:

13872 = 2⁴ × 3¹ × 17²

Step-3: Factors of 13855

List of positive integer factors of 13855 that divides 13855 without a remainder.

1, 5, 17, 85, 163, 815, 2771

Step-4: Factors of 13872

List of positive integer factors of 13872 that divides 13855 without a remainder.

1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 289, 408, 578, 816, 867, 1156, 1734, 2312, 3468, 4624, 6936

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 13855 and 13872. The biggest common factor number is the GCF number.
So the greatest common factor 13855 and 13872 is 17.

Also check out the Least Common Multiple of 13855 and 13872