What is the Greatest Common Factor of 6640 and 6646?

Greatest common factor (GCF) of 6640 and 6646 is 2.

GCF(6640,6646) = 2

We will now calculate the prime factors of 6640 and 6646, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 6640 and 6646.

How to find the GCF of 6640 and 6646?

We will first find the prime factorization of 6640 and 6646. After we will calculate the factors of 6640 and 6646 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 6646

Prime factors of 6646 are 2, 3323. Prime factorization of 6646 in exponential form is:

6646 = 2¹ × 3323¹

Step-3: Factors of 6640

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

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

Step-4: Factors of 6646

List of positive integer factors of 6646 that divides 6640 without a remainder.

1, 2, 3323

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 6640 and 6646. The biggest common factor number is the GCF number.
So the greatest common factor 6640 and 6646 is 2.

Also check out the Least Common Multiple of 6640 and 6646