What is the Greatest Common Factor of 25470 and 25485?

Greatest common factor (GCF) of 25470 and 25485 is 15.

GCF(25470,25485) = 15

We will now calculate the prime factors of 25470 and 25485, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25470 and 25485.

How to find the GCF of 25470 and 25485?

We will first find the prime factorization of 25470 and 25485. After we will calculate the factors of 25470 and 25485 and find the biggest common factor number .

Step-1: Prime Factorization of 25470

Prime factors of 25470 are 2, 3, 5, 283. Prime factorization of 25470 in exponential form is:

25470 = 2¹ × 3² × 5¹ × 283¹

Step-2: Prime Factorization of 25485

Prime factors of 25485 are 3, 5, 1699. Prime factorization of 25485 in exponential form is:

25485 = 3¹ × 5¹ × 1699¹

Step-3: Factors of 25470

List of positive integer factors of 25470 that divides 25470 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 283, 566, 849, 1415, 1698, 2547, 2830, 4245, 5094, 8490, 12735

Step-4: Factors of 25485

List of positive integer factors of 25485 that divides 25470 without a remainder.

1, 3, 5, 15, 1699, 5097, 8495

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25470 and 25485. The biggest common factor number is the GCF number.
So the greatest common factor 25470 and 25485 is 15.

Also check out the Least Common Multiple of 25470 and 25485