What is the Greatest Common Factor of 15643 and 15659?

Greatest common factor (GCF) of 15643 and 15659 is 1.

GCF(15643,15659) = 1

We will now calculate the prime factors of 15643 and 15659, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15643 and 15659.

How to find the GCF of 15643 and 15659?

We will first find the prime factorization of 15643 and 15659. After we will calculate the factors of 15643 and 15659 and find the biggest common factor number .

Step-1: Prime Factorization of 15643

Prime factors of 15643 are 15643. Prime factorization of 15643 in exponential form is:

15643 = 15643¹

Step-2: Prime Factorization of 15659

Prime factors of 15659 are 7, 2237. Prime factorization of 15659 in exponential form is:

15659 = 7¹ × 2237¹

Step-3: Factors of 15643

List of positive integer factors of 15643 that divides 15643 without a remainder.

Step-4: Factors of 15659

List of positive integer factors of 15659 that divides 15643 without a remainder.

1, 7, 2237

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15643 and 15659. The biggest common factor number is the GCF number.
So the greatest common factor 15643 and 15659 is 1.

Also check out the Least Common Multiple of 15643 and 15659