What is the Greatest Common Factor of 66560 and 66580?

Greatest common factor (GCF) of 66560 and 66580 is 20.

GCF(66560,66580) = 20

We will now calculate the prime factors of 66560 and 66580, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66560 and 66580.

How to find the GCF of 66560 and 66580?

We will first find the prime factorization of 66560 and 66580. After we will calculate the factors of 66560 and 66580 and find the biggest common factor number .

Step-1: Prime Factorization of 66560

Prime factors of 66560 are 2, 5, 13. Prime factorization of 66560 in exponential form is:

66560 = 2¹⁰ × 5¹ × 13¹

Step-2: Prime Factorization of 66580

Prime factors of 66580 are 2, 5, 3329. Prime factorization of 66580 in exponential form is:

66580 = 2² × 5¹ × 3329¹

Step-3: Factors of 66560

List of positive integer factors of 66560 that divides 66560 without a remainder.

1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1024, 1040, 1280, 1664, 2080, 2560, 3328, 4160, 5120, 6656, 8320, 13312, 16640, 33280

Step-4: Factors of 66580

List of positive integer factors of 66580 that divides 66560 without a remainder.

1, 2, 4, 5, 10, 20, 3329, 6658, 13316, 16645, 33290

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66560 and 66580. The biggest common factor number is the GCF number.
So the greatest common factor 66560 and 66580 is 20.

Also check out the Least Common Multiple of 66560 and 66580