What is the Greatest Common Factor of 13905 and 13921?

Greatest common factor (GCF) of 13905 and 13921 is 1.

GCF(13905,13921) = 1

We will now calculate the prime factors of 13905 and 13921, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 13905 and 13921.

How to find the GCF of 13905 and 13921?

We will first find the prime factorization of 13905 and 13921. After we will calculate the factors of 13905 and 13921 and find the biggest common factor number .

Step-1: Prime Factorization of 13905

Prime factors of 13905 are 3, 5, 103. Prime factorization of 13905 in exponential form is:

13905 = 3³ × 5¹ × 103¹

Step-2: Prime Factorization of 13921

Prime factors of 13921 are 13921. Prime factorization of 13921 in exponential form is:

13921 = 13921¹

Step-3: Factors of 13905

List of positive integer factors of 13905 that divides 13905 without a remainder.

1, 3, 5, 9, 15, 27, 45, 103, 135, 309, 515, 927, 1545, 2781, 4635

Step-4: Factors of 13921

List of positive integer factors of 13921 that divides 13905 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 13905 and 13921. The biggest common factor number is the GCF number.
So the greatest common factor 13905 and 13921 is 1.

Also check out the Least Common Multiple of 13905 and 13921