What is the Greatest Common Factor of 12643 and 12661?

Greatest common factor (GCF) of 12643 and 12661 is 1.

GCF(12643,12661) = 1

We will now calculate the prime factors of 12643 and 12661, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12643 and 12661.

How to find the GCF of 12643 and 12661?

We will first find the prime factorization of 12643 and 12661. After we will calculate the factors of 12643 and 12661 and find the biggest common factor number .

Step-1: Prime Factorization of 12643

Prime factors of 12643 are 47, 269. Prime factorization of 12643 in exponential form is:

12643 = 47¹ × 269¹

Step-2: Prime Factorization of 12661

Prime factors of 12661 are 11, 1151. Prime factorization of 12661 in exponential form is:

12661 = 11¹ × 1151¹

Step-3: Factors of 12643

List of positive integer factors of 12643 that divides 12643 without a remainder.

1, 47, 269

Step-4: Factors of 12661

List of positive integer factors of 12661 that divides 12643 without a remainder.

1, 11, 1151

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12643 and 12661. The biggest common factor number is the GCF number.
So the greatest common factor 12643 and 12661 is 1.

Also check out the Least Common Multiple of 12643 and 12661