What is the Greatest Common Factor of 12780 and 12795?

Greatest common factor (GCF) of 12780 and 12795 is 15.

GCF(12780,12795) = 15

We will now calculate the prime factors of 12780 and 12795, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12780 and 12795.

How to find the GCF of 12780 and 12795?

We will first find the prime factorization of 12780 and 12795. After we will calculate the factors of 12780 and 12795 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 12795

Prime factors of 12795 are 3, 5, 853. Prime factorization of 12795 in exponential form is:

12795 = 3¹ × 5¹ × 853¹

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 12795

List of positive integer factors of 12795 that divides 12780 without a remainder.

1, 3, 5, 15, 853, 2559, 4265

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12780 and 12795. The biggest common factor number is the GCF number.
So the greatest common factor 12780 and 12795 is 15.

Also check out the Least Common Multiple of 12780 and 12795