What is the Greatest Common Factor of 6615 and 6620?

Greatest common factor (GCF) of 6615 and 6620 is 5.

GCF(6615,6620) = 5

We will now calculate the prime factors of 6615 and 6620, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 6615 and 6620.

How to find the GCF of 6615 and 6620?

We will first find the prime factorization of 6615 and 6620. After we will calculate the factors of 6615 and 6620 and find the biggest common factor number .

Step-1: Prime Factorization of 6615

Prime factors of 6615 are 3, 5, 7. Prime factorization of 6615 in exponential form is:

6615 = 3³ × 5¹ × 7²

Step-2: Prime Factorization of 6620

Prime factors of 6620 are 2, 5, 331. Prime factorization of 6620 in exponential form is:

6620 = 2² × 5¹ × 331¹

Step-3: Factors of 6615

List of positive integer factors of 6615 that divides 6615 without a remainder.

1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 105, 135, 147, 189, 245, 315, 441, 735, 945, 1323, 2205

Step-4: Factors of 6620

List of positive integer factors of 6620 that divides 6615 without a remainder.

1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 3310

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 6615 and 6620. The biggest common factor number is the GCF number.
So the greatest common factor 6615 and 6620 is 5.

Also check out the Least Common Multiple of 6615 and 6620