What is the Greatest Common Factor of 51909 and 51921?

Greatest common factor (GCF) of 51909 and 51921 is 3.

GCF(51909,51921) = 3

We will now calculate the prime factors of 51909 and 51921, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 51909 and 51921.

How to find the GCF of 51909 and 51921?

We will first find the prime factorization of 51909 and 51921. After we will calculate the factors of 51909 and 51921 and find the biggest common factor number .

Step-1: Prime Factorization of 51909

Prime factors of 51909 are 3, 11, 13. Prime factorization of 51909 in exponential form is:

51909 = 3¹ × 11³ × 13¹

Step-2: Prime Factorization of 51921

Prime factors of 51921 are 3, 641. Prime factorization of 51921 in exponential form is:

51921 = 3⁴ × 641¹

Step-3: Factors of 51909

List of positive integer factors of 51909 that divides 51909 without a remainder.

1, 3, 11, 13, 33, 39, 121, 143, 363, 429, 1331, 1573, 3993, 4719, 17303

Step-4: Factors of 51921

List of positive integer factors of 51921 that divides 51909 without a remainder.

1, 3, 9, 27, 81, 641, 1923, 5769, 17307

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 51909 and 51921. The biggest common factor number is the GCF number.
So the greatest common factor 51909 and 51921 is 3.

Also check out the Least Common Multiple of 51909 and 51921