What is the Greatest Common Factor of 3972 and 3987?

Greatest common factor (GCF) of 3972 and 3987 is 3.

GCF(3972,3987) = 3

We will now calculate the prime factors of 3972 and 3987, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 3972 and 3987.

How to find the GCF of 3972 and 3987?

We will first find the prime factorization of 3972 and 3987. After we will calculate the factors of 3972 and 3987 and find the biggest common factor number .

Step-1: Prime Factorization of 3972

Prime factors of 3972 are 2, 3, 331. Prime factorization of 3972 in exponential form is:

3972 = 2² × 3¹ × 331¹

Step-2: Prime Factorization of 3987

Prime factors of 3987 are 3, 443. Prime factorization of 3987 in exponential form is:

3987 = 3² × 443¹

Step-3: Factors of 3972

List of positive integer factors of 3972 that divides 3972 without a remainder.

1, 2, 3, 4, 6, 12, 331, 662, 993, 1324, 1986

Step-4: Factors of 3987

List of positive integer factors of 3987 that divides 3972 without a remainder.

1, 3, 9, 443, 1329

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 3972 and 3987. The biggest common factor number is the GCF number.
So the greatest common factor 3972 and 3987 is 3.

Also check out the Least Common Multiple of 3972 and 3987