What is the Greatest Common Factor of 3980 and 3986?

Greatest common factor (GCF) of 3980 and 3986 is 2.

GCF(3980,3986) = 2

We will now calculate the prime factors of 3980 and 3986, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 3980 and 3986.

How to find the GCF of 3980 and 3986?

We will first find the prime factorization of 3980 and 3986. After we will calculate the factors of 3980 and 3986 and find the biggest common factor number .

Step-1: Prime Factorization of 3980

Prime factors of 3980 are 2, 5, 199. Prime factorization of 3980 in exponential form is:

3980 = 2² × 5¹ × 199¹

Step-2: Prime Factorization of 3986

Prime factors of 3986 are 2, 1993. Prime factorization of 3986 in exponential form is:

3986 = 2¹ × 1993¹

Step-3: Factors of 3980

List of positive integer factors of 3980 that divides 3980 without a remainder.

1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990

Step-4: Factors of 3986

List of positive integer factors of 3986 that divides 3980 without a remainder.

1, 2, 1993

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 3980 and 3986. The biggest common factor number is the GCF number.
So the greatest common factor 3980 and 3986 is 2.

Also check out the Least Common Multiple of 3980 and 3986