What is the Greatest Common Factor of 12780 and 12791?

Greatest common factor (GCF) of 12780 and 12791 is 1.

GCF(12780,12791) = 1

We will now calculate the prime factors of 12780 and 12791, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12780 and 12791.

How to find the GCF of 12780 and 12791?

We will first find the prime factorization of 12780 and 12791. After we will calculate the factors of 12780 and 12791 and find the biggest common factor number .

Step-1: Prime Factorization of 12780

Prime factors of 12780 are 2, 3, 5, 71. Prime factorization of 12780 in exponential form is:

12780 = 2² × 3² × 5¹ × 71¹

Step-2: Prime Factorization of 12791

Prime factors of 12791 are 12791. Prime factorization of 12791 in exponential form is:

12791 = 12791¹

Step-3: Factors of 12780

List of positive integer factors of 12780 that divides 12780 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 2130, 2556, 3195, 4260, 6390

Step-4: Factors of 12791

List of positive integer factors of 12791 that divides 12780 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12780 and 12791. The biggest common factor number is the GCF number.
So the greatest common factor 12780 and 12791 is 1.

Also check out the Least Common Multiple of 12780 and 12791