What is the Greatest Common Factor of 15781 and 15795?

Greatest common factor (GCF) of 15781 and 15795 is 1.

GCF(15781,15795) = 1

We will now calculate the prime factors of 15781 and 15795, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15781 and 15795.

How to find the GCF of 15781 and 15795?

We will first find the prime factorization of 15781 and 15795. After we will calculate the factors of 15781 and 15795 and find the biggest common factor number .

Step-1: Prime Factorization of 15781

Prime factors of 15781 are 43, 367. Prime factorization of 15781 in exponential form is:

15781 = 43¹ × 367¹

Step-2: Prime Factorization of 15795

Prime factors of 15795 are 3, 5, 13. Prime factorization of 15795 in exponential form is:

15795 = 3⁵ × 5¹ × 13¹

Step-3: Factors of 15781

List of positive integer factors of 15781 that divides 15781 without a remainder.

1, 43, 367

Step-4: Factors of 15795

List of positive integer factors of 15795 that divides 15781 without a remainder.

1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 243, 351, 405, 585, 1053, 1215, 1755, 3159, 5265

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15781 and 15795. The biggest common factor number is the GCF number.
So the greatest common factor 15781 and 15795 is 1.

Also check out the Least Common Multiple of 15781 and 15795