What is the Greatest Common Factor of 15643 and 15651?

Greatest common factor (GCF) of 15643 and 15651 is 1.

GCF(15643,15651) = 1

We will now calculate the prime factors of 15643 and 15651, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15643 and 15651.

How to find the GCF of 15643 and 15651?

We will first find the prime factorization of 15643 and 15651. After we will calculate the factors of 15643 and 15651 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 15651

Prime factors of 15651 are 3, 37, 47. Prime factorization of 15651 in exponential form is:

15651 = 3² × 37¹ × 47¹

Step-3: Factors of 15643

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

Step-4: Factors of 15651

List of positive integer factors of 15651 that divides 15643 without a remainder.

1, 3, 9, 37, 47, 111, 141, 333, 423, 1739, 5217

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15643 and 15651. The biggest common factor number is the GCF number.
So the greatest common factor 15643 and 15651 is 1.

Also check out the Least Common Multiple of 15643 and 15651