What is the Greatest Common Factor of 3940 and 3947?

Greatest common factor (GCF) of 3940 and 3947 is 1.

GCF(3940,3947) = 1

We will now calculate the prime factors of 3940 and 3947, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 3940 and 3947.

How to find the GCF of 3940 and 3947?

We will first find the prime factorization of 3940 and 3947. After we will calculate the factors of 3940 and 3947 and find the biggest common factor number .

Step-1: Prime Factorization of 3940

Prime factors of 3940 are 2, 5, 197. Prime factorization of 3940 in exponential form is:

3940 = 2² × 5¹ × 197¹

Step-2: Prime Factorization of 3947

Prime factors of 3947 are 3947. Prime factorization of 3947 in exponential form is:

3947 = 3947¹

Step-3: Factors of 3940

List of positive integer factors of 3940 that divides 3940 without a remainder.

1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970

Step-4: Factors of 3947

List of positive integer factors of 3947 that divides 3940 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 3940 and 3947. The biggest common factor number is the GCF number.
So the greatest common factor 3940 and 3947 is 1.

Also check out the Least Common Multiple of 3940 and 3947