What is the Greatest Common Factor of 12505 and 12520?

Greatest common factor (GCF) of 12505 and 12520 is 5.

GCF(12505,12520) = 5

We will now calculate the prime factors of 12505 and 12520, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12505 and 12520.

How to find the GCF of 12505 and 12520?

We will first find the prime factorization of 12505 and 12520. After we will calculate the factors of 12505 and 12520 and find the biggest common factor number .

Step-1: Prime Factorization of 12505

Prime factors of 12505 are 5, 41, 61. Prime factorization of 12505 in exponential form is:

12505 = 5¹ × 41¹ × 61¹

Step-2: Prime Factorization of 12520

Prime factors of 12520 are 2, 5, 313. Prime factorization of 12520 in exponential form is:

12520 = 2³ × 5¹ × 313¹

Step-3: Factors of 12505

List of positive integer factors of 12505 that divides 12505 without a remainder.

1, 5, 41, 61, 205, 305, 2501

Step-4: Factors of 12520

List of positive integer factors of 12520 that divides 12505 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2504, 3130, 6260

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12505 and 12520. The biggest common factor number is the GCF number.
So the greatest common factor 12505 and 12520 is 5.

Also check out the Least Common Multiple of 12505 and 12520