What is the Greatest Common Factor of 6621 and 6640?

Greatest common factor (GCF) of 6621 and 6640 is 1.

GCF(6621,6640) = 1

We will now calculate the prime factors of 6621 and 6640, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 6621 and 6640.

How to find the GCF of 6621 and 6640?

We will first find the prime factorization of 6621 and 6640. After we will calculate the factors of 6621 and 6640 and find the biggest common factor number .

Step-1: Prime Factorization of 6621

Prime factors of 6621 are 3, 2207. Prime factorization of 6621 in exponential form is:

6621 = 3¹ × 2207¹

Step-2: Prime Factorization of 6640

Prime factors of 6640 are 2, 5, 83. Prime factorization of 6640 in exponential form is:

6640 = 2⁴ × 5¹ × 83¹

Step-3: Factors of 6621

List of positive integer factors of 6621 that divides 6621 without a remainder.

1, 3, 2207

Step-4: Factors of 6640

List of positive integer factors of 6640 that divides 6621 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 3320

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 6621 and 6640. The biggest common factor number is the GCF number.
So the greatest common factor 6621 and 6640 is 1.

Also check out the Least Common Multiple of 6621 and 6640