What is the Greatest Common Factor of 3966 and 3981?

Greatest common factor (GCF) of 3966 and 3981 is 3.

GCF(3966,3981) = 3

We will now calculate the prime factors of 3966 and 3981, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 3966 and 3981.

How to find the GCF of 3966 and 3981?

We will first find the prime factorization of 3966 and 3981. After we will calculate the factors of 3966 and 3981 and find the biggest common factor number .

Step-1: Prime Factorization of 3966

Prime factors of 3966 are 2, 3, 661. Prime factorization of 3966 in exponential form is:

3966 = 2¹ × 3¹ × 661¹

Step-2: Prime Factorization of 3981

Prime factors of 3981 are 3, 1327. Prime factorization of 3981 in exponential form is:

3981 = 3¹ × 1327¹

Step-3: Factors of 3966

List of positive integer factors of 3966 that divides 3966 without a remainder.

1, 2, 3, 6, 661, 1322, 1983

Step-4: Factors of 3981

List of positive integer factors of 3981 that divides 3966 without a remainder.

1, 3, 1327

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 3966 and 3981. The biggest common factor number is the GCF number.
So the greatest common factor 3966 and 3981 is 3.

Also check out the Least Common Multiple of 3966 and 3981