What is the Greatest Common Factor of 12680 and 12690?

Greatest common factor (GCF) of 12680 and 12690 is 10.

GCF(12680,12690) = 10

We will now calculate the prime factors of 12680 and 12690, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12680 and 12690.

How to find the GCF of 12680 and 12690?

We will first find the prime factorization of 12680 and 12690. After we will calculate the factors of 12680 and 12690 and find the biggest common factor number .

Step-1: Prime Factorization of 12680

Prime factors of 12680 are 2, 5, 317. Prime factorization of 12680 in exponential form is:

12680 = 2³ × 5¹ × 317¹

Step-2: Prime Factorization of 12690

Prime factors of 12690 are 2, 3, 5, 47. Prime factorization of 12690 in exponential form is:

12690 = 2¹ × 3³ × 5¹ × 47¹

Step-3: Factors of 12680

List of positive integer factors of 12680 that divides 12680 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 2536, 3170, 6340

Step-4: Factors of 12690

List of positive integer factors of 12690 that divides 12680 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 47, 54, 90, 94, 135, 141, 235, 270, 282, 423, 470, 705, 846, 1269, 1410, 2115, 2538, 4230, 6345

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12680 and 12690. The biggest common factor number is the GCF number.
So the greatest common factor 12680 and 12690 is 10.

Also check out the Least Common Multiple of 12680 and 12690