What is the Greatest Common Factor of 12778 and 12790?

Greatest common factor (GCF) of 12778 and 12790 is 2.

GCF(12778,12790) = 2

We will now calculate the prime factors of 12778 and 12790, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12778 and 12790.

How to find the GCF of 12778 and 12790?

We will first find the prime factorization of 12778 and 12790. After we will calculate the factors of 12778 and 12790 and find the biggest common factor number .

Step-1: Prime Factorization of 12778

Prime factors of 12778 are 2, 6389. Prime factorization of 12778 in exponential form is:

12778 = 2¹ × 6389¹

Step-2: Prime Factorization of 12790

Prime factors of 12790 are 2, 5, 1279. Prime factorization of 12790 in exponential form is:

12790 = 2¹ × 5¹ × 1279¹

Step-3: Factors of 12778

List of positive integer factors of 12778 that divides 12778 without a remainder.

1, 2, 6389

Step-4: Factors of 12790

List of positive integer factors of 12790 that divides 12778 without a remainder.

1, 2, 5, 10, 1279, 2558, 6395

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12778 and 12790. The biggest common factor number is the GCF number.
So the greatest common factor 12778 and 12790 is 2.

Also check out the Least Common Multiple of 12778 and 12790