What is the Greatest Common Factor of 25870 and 25885?

Greatest common factor (GCF) of 25870 and 25885 is 5.

GCF(25870,25885) = 5

We will now calculate the prime factors of 25870 and 25885, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25870 and 25885.

How to find the GCF of 25870 and 25885?

We will first find the prime factorization of 25870 and 25885. After we will calculate the factors of 25870 and 25885 and find the biggest common factor number .

Step-1: Prime Factorization of 25870

Prime factors of 25870 are 2, 5, 13, 199. Prime factorization of 25870 in exponential form is:

25870 = 2¹ × 5¹ × 13¹ × 199¹

Step-2: Prime Factorization of 25885

Prime factors of 25885 are 5, 31, 167. Prime factorization of 25885 in exponential form is:

25885 = 5¹ × 31¹ × 167¹

Step-3: Factors of 25870

List of positive integer factors of 25870 that divides 25870 without a remainder.

1, 2, 5, 10, 13, 26, 65, 130, 199, 398, 995, 1990, 2587, 5174, 12935

Step-4: Factors of 25885

List of positive integer factors of 25885 that divides 25870 without a remainder.

1, 5, 31, 155, 167, 835, 5177

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25870 and 25885. The biggest common factor number is the GCF number.
So the greatest common factor 25870 and 25885 is 5.

Also check out the Least Common Multiple of 25870 and 25885