What is the Greatest Common Factor of 66909 and 66921?

Greatest common factor (GCF) of 66909 and 66921 is 3.

GCF(66909,66921) = 3

We will now calculate the prime factors of 66909 and 66921, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66909 and 66921.

How to find the GCF of 66909 and 66921?

We will first find the prime factorization of 66909 and 66921. After we will calculate the factors of 66909 and 66921 and find the biggest common factor number .

Step-1: Prime Factorization of 66909

Prime factors of 66909 are 3, 22303. Prime factorization of 66909 in exponential form is:

66909 = 3¹ × 22303¹

Step-2: Prime Factorization of 66921

Prime factors of 66921 are 3, 22307. Prime factorization of 66921 in exponential form is:

66921 = 3¹ × 22307¹

Step-3: Factors of 66909

List of positive integer factors of 66909 that divides 66909 without a remainder.

1, 3, 22303

Step-4: Factors of 66921

List of positive integer factors of 66921 that divides 66909 without a remainder.

1, 3, 22307

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66909 and 66921. The biggest common factor number is the GCF number.
So the greatest common factor 66909 and 66921 is 3.

Also check out the Least Common Multiple of 66909 and 66921