What is the Greatest Common Factor of 15843 and 15857?

Greatest common factor (GCF) of 15843 and 15857 is 1.

GCF(15843,15857) = 1

We will now calculate the prime factors of 15843 and 15857, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15843 and 15857.

How to find the GCF of 15843 and 15857?

We will first find the prime factorization of 15843 and 15857. After we will calculate the factors of 15843 and 15857 and find the biggest common factor number .

Step-1: Prime Factorization of 15843

Prime factors of 15843 are 3, 5281. Prime factorization of 15843 in exponential form is:

15843 = 3¹ × 5281¹

Step-2: Prime Factorization of 15857

Prime factors of 15857 are 101, 157. Prime factorization of 15857 in exponential form is:

15857 = 101¹ × 157¹

Step-3: Factors of 15843

List of positive integer factors of 15843 that divides 15843 without a remainder.

1, 3, 5281

Step-4: Factors of 15857

List of positive integer factors of 15857 that divides 15843 without a remainder.

1, 101, 157

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15843 and 15857. The biggest common factor number is the GCF number.
So the greatest common factor 15843 and 15857 is 1.

Also check out the Least Common Multiple of 15843 and 15857