What is the Greatest Common Factor of 66820 and 66828?

Greatest common factor (GCF) of 66820 and 66828 is 4.

GCF(66820,66828) = 4

We will now calculate the prime factors of 66820 and 66828, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66820 and 66828.

How to find the GCF of 66820 and 66828?

We will first find the prime factorization of 66820 and 66828. After we will calculate the factors of 66820 and 66828 and find the biggest common factor number .

Step-1: Prime Factorization of 66820

Prime factors of 66820 are 2, 5, 13, 257. Prime factorization of 66820 in exponential form is:

66820 = 2² × 5¹ × 13¹ × 257¹

Step-2: Prime Factorization of 66828

Prime factors of 66828 are 2, 3, 5569. Prime factorization of 66828 in exponential form is:

66828 = 2² × 3¹ × 5569¹

Step-3: Factors of 66820

List of positive integer factors of 66820 that divides 66820 without a remainder.

1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 257, 260, 514, 1028, 1285, 2570, 3341, 5140, 6682, 13364, 16705, 33410

Step-4: Factors of 66828

List of positive integer factors of 66828 that divides 66820 without a remainder.

1, 2, 3, 4, 6, 12, 5569, 11138, 16707, 22276, 33414

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66820 and 66828. The biggest common factor number is the GCF number.
So the greatest common factor 66820 and 66828 is 4.

Also check out the Least Common Multiple of 66820 and 66828