What is the Greatest Common Factor of 12815 and 12825?

Greatest common factor (GCF) of 12815 and 12825 is 5.

GCF(12815,12825) = 5

We will now calculate the prime factors of 12815 and 12825, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12815 and 12825.

How to find the GCF of 12815 and 12825?

We will first find the prime factorization of 12815 and 12825. After we will calculate the factors of 12815 and 12825 and find the biggest common factor number .

Step-1: Prime Factorization of 12815

Prime factors of 12815 are 5, 11, 233. Prime factorization of 12815 in exponential form is:

12815 = 5¹ × 11¹ × 233¹

Step-2: Prime Factorization of 12825

Prime factors of 12825 are 3, 5, 19. Prime factorization of 12825 in exponential form is:

12825 = 3³ × 5² × 19¹

Step-3: Factors of 12815

List of positive integer factors of 12815 that divides 12815 without a remainder.

1, 5, 11, 55, 233, 1165, 2563

Step-4: Factors of 12825

List of positive integer factors of 12825 that divides 12815 without a remainder.

1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 95, 135, 171, 225, 285, 475, 513, 675, 855, 1425, 2565, 4275

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12815 and 12825. The biggest common factor number is the GCF number.
So the greatest common factor 12815 and 12825 is 5.

Also check out the Least Common Multiple of 12815 and 12825