What is the Greatest Common Factor of 25815 and 25819?

Greatest common factor (GCF) of 25815 and 25819 is 1.

GCF(25815,25819) = 1

We will now calculate the prime factors of 25815 and 25819, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25815 and 25819.

How to find the GCF of 25815 and 25819?

We will first find the prime factorization of 25815 and 25819. After we will calculate the factors of 25815 and 25819 and find the biggest common factor number .

Step-1: Prime Factorization of 25815

Prime factors of 25815 are 3, 5, 1721. Prime factorization of 25815 in exponential form is:

25815 = 3¹ × 5¹ × 1721¹

Step-2: Prime Factorization of 25819

Prime factors of 25819 are 25819. Prime factorization of 25819 in exponential form is:

25819 = 25819¹

Step-3: Factors of 25815

List of positive integer factors of 25815 that divides 25815 without a remainder.

1, 3, 5, 15, 1721, 5163, 8605

Step-4: Factors of 25819

List of positive integer factors of 25819 that divides 25815 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25815 and 25819. The biggest common factor number is the GCF number.
So the greatest common factor 25815 and 25819 is 1.

Also check out the Least Common Multiple of 25815 and 25819