What is the Greatest Common Factor of 25545 and 25557?

Greatest common factor (GCF) of 25545 and 25557 is 3.

GCF(25545,25557) = 3

We will now calculate the prime factors of 25545 and 25557, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25545 and 25557.

How to find the GCF of 25545 and 25557?

We will first find the prime factorization of 25545 and 25557. After we will calculate the factors of 25545 and 25557 and find the biggest common factor number .

Step-1: Prime Factorization of 25545

Prime factors of 25545 are 3, 5, 13, 131. Prime factorization of 25545 in exponential form is:

25545 = 3¹ × 5¹ × 13¹ × 131¹

Step-2: Prime Factorization of 25557

Prime factors of 25557 are 3, 7, 1217. Prime factorization of 25557 in exponential form is:

25557 = 3¹ × 7¹ × 1217¹

Step-3: Factors of 25545

List of positive integer factors of 25545 that divides 25545 without a remainder.

1, 3, 5, 13, 15, 39, 65, 131, 195, 393, 655, 1703, 1965, 5109, 8515

Step-4: Factors of 25557

List of positive integer factors of 25557 that divides 25545 without a remainder.

1, 3, 7, 21, 1217, 3651, 8519

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25545 and 25557. The biggest common factor number is the GCF number.
So the greatest common factor 25545 and 25557 is 3.

Also check out the Least Common Multiple of 25545 and 25557