What is the Greatest Common Factor of 66615 and 66621?

Greatest common factor (GCF) of 66615 and 66621 is 3.

GCF(66615,66621) = 3

We will now calculate the prime factors of 66615 and 66621, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66615 and 66621.

How to find the GCF of 66615 and 66621?

We will first find the prime factorization of 66615 and 66621. After we will calculate the factors of 66615 and 66621 and find the biggest common factor number .

Step-1: Prime Factorization of 66615

Prime factors of 66615 are 3, 5, 4441. Prime factorization of 66615 in exponential form is:

66615 = 3¹ × 5¹ × 4441¹

Step-2: Prime Factorization of 66621

Prime factors of 66621 are 3, 53, 419. Prime factorization of 66621 in exponential form is:

66621 = 3¹ × 53¹ × 419¹

Step-3: Factors of 66615

List of positive integer factors of 66615 that divides 66615 without a remainder.

1, 3, 5, 15, 4441, 13323, 22205

Step-4: Factors of 66621

List of positive integer factors of 66621 that divides 66615 without a remainder.

1, 3, 53, 159, 419, 1257, 22207

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66615 and 66621. The biggest common factor number is the GCF number.
So the greatest common factor 66615 and 66621 is 3.

Also check out the Least Common Multiple of 66615 and 66621