What is the Greatest Common Factor of 25155 and 25170?

Greatest common factor (GCF) of 25155 and 25170 is 15.

GCF(25155,25170) = 15

We will now calculate the prime factors of 25155 and 25170, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25155 and 25170.

How to find the GCF of 25155 and 25170?

We will first find the prime factorization of 25155 and 25170. After we will calculate the factors of 25155 and 25170 and find the biggest common factor number .

Step-1: Prime Factorization of 25155

Prime factors of 25155 are 3, 5, 13, 43. Prime factorization of 25155 in exponential form is:

25155 = 3² × 5¹ × 13¹ × 43¹

Step-2: Prime Factorization of 25170

Prime factors of 25170 are 2, 3, 5, 839. Prime factorization of 25170 in exponential form is:

25170 = 2¹ × 3¹ × 5¹ × 839¹

Step-3: Factors of 25155

List of positive integer factors of 25155 that divides 25155 without a remainder.

1, 3, 5, 9, 13, 15, 39, 43, 45, 65, 117, 129, 195, 215, 387, 559, 585, 645, 1677, 1935, 2795, 5031, 8385

Step-4: Factors of 25170

List of positive integer factors of 25170 that divides 25155 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 839, 1678, 2517, 4195, 5034, 8390, 12585

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25155 and 25170. The biggest common factor number is the GCF number.
So the greatest common factor 25155 and 25170 is 15.

Also check out the Least Common Multiple of 25155 and 25170