What is the Greatest Common Factor of 66606 and 66620?

Greatest common factor (GCF) of 66606 and 66620 is 2.

GCF(66606,66620) = 2

We will now calculate the prime factors of 66606 and 66620, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66606 and 66620.

How to find the GCF of 66606 and 66620?

We will first find the prime factorization of 66606 and 66620. After we will calculate the factors of 66606 and 66620 and find the biggest common factor number .

Step-1: Prime Factorization of 66606

Prime factors of 66606 are 2, 3, 17, 653. Prime factorization of 66606 in exponential form is:

66606 = 2¹ × 3¹ × 17¹ × 653¹

Step-2: Prime Factorization of 66620

Prime factors of 66620 are 2, 5, 3331. Prime factorization of 66620 in exponential form is:

66620 = 2² × 5¹ × 3331¹

Step-3: Factors of 66606

List of positive integer factors of 66606 that divides 66606 without a remainder.

1, 2, 3, 6, 17, 34, 51, 102, 653, 1306, 1959, 3918, 11101, 22202, 33303

Step-4: Factors of 66620

List of positive integer factors of 66620 that divides 66606 without a remainder.

1, 2, 4, 5, 10, 20, 3331, 6662, 13324, 16655, 33310

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66606 and 66620. The biggest common factor number is the GCF number.
So the greatest common factor 66606 and 66620 is 2.

Also check out the Least Common Multiple of 66606 and 66620