What is the Greatest Common Factor of 39781 and 39788?

Greatest common factor (GCF) of 39781 and 39788 is 7.

GCF(39781,39788) = 7

We will now calculate the prime factors of 39781 and 39788, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39781 and 39788.

How to find the GCF of 39781 and 39788?

We will first find the prime factorization of 39781 and 39788. After we will calculate the factors of 39781 and 39788 and find the biggest common factor number .

Step-1: Prime Factorization of 39781

Prime factors of 39781 are 7, 5683. Prime factorization of 39781 in exponential form is:

39781 = 7¹ × 5683¹

Step-2: Prime Factorization of 39788

Prime factors of 39788 are 2, 7, 29. Prime factorization of 39788 in exponential form is:

39788 = 2² × 7³ × 29¹

Step-3: Factors of 39781

List of positive integer factors of 39781 that divides 39781 without a remainder.

1, 7, 5683

Step-4: Factors of 39788

List of positive integer factors of 39788 that divides 39781 without a remainder.

1, 2, 4, 7, 14, 28, 29, 49, 58, 98, 116, 196, 203, 343, 406, 686, 812, 1372, 1421, 2842, 5684, 9947, 19894

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39781 and 39788. The biggest common factor number is the GCF number.
So the greatest common factor 39781 and 39788 is 7.

Also check out the Least Common Multiple of 39781 and 39788