What is the Greatest Common Factor of 25581 and 25590?

Greatest common factor (GCF) of 25581 and 25590 is 3.

GCF(25581,25590) = 3

We will now calculate the prime factors of 25581 and 25590, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25581 and 25590.

How to find the GCF of 25581 and 25590?

We will first find the prime factorization of 25581 and 25590. After we will calculate the factors of 25581 and 25590 and find the biggest common factor number .

Step-1: Prime Factorization of 25581

Prime factors of 25581 are 3, 8527. Prime factorization of 25581 in exponential form is:

25581 = 3¹ × 8527¹

Step-2: Prime Factorization of 25590

Prime factors of 25590 are 2, 3, 5, 853. Prime factorization of 25590 in exponential form is:

25590 = 2¹ × 3¹ × 5¹ × 853¹

Step-3: Factors of 25581

List of positive integer factors of 25581 that divides 25581 without a remainder.

1, 3, 8527

Step-4: Factors of 25590

List of positive integer factors of 25590 that divides 25581 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 853, 1706, 2559, 4265, 5118, 8530, 12795

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25581 and 25590. The biggest common factor number is the GCF number.
So the greatest common factor 25581 and 25590 is 3.

Also check out the Least Common Multiple of 25581 and 25590