What is the Greatest Common Factor of 25857 and 25861?

Greatest common factor (GCF) of 25857 and 25861 is 1.

GCF(25857,25861) = 1

We will now calculate the prime factors of 25857 and 25861, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25857 and 25861.

How to find the GCF of 25857 and 25861?

We will first find the prime factorization of 25857 and 25861. After we will calculate the factors of 25857 and 25861 and find the biggest common factor number .

Step-1: Prime Factorization of 25857

Prime factors of 25857 are 3, 13, 17. Prime factorization of 25857 in exponential form is:

25857 = 3² × 13² × 17¹

Step-2: Prime Factorization of 25861

Prime factors of 25861 are 11, 2351. Prime factorization of 25861 in exponential form is:

25861 = 11¹ × 2351¹

Step-3: Factors of 25857

List of positive integer factors of 25857 that divides 25857 without a remainder.

1, 3, 9, 13, 17, 39, 51, 117, 153, 169, 221, 507, 663, 1521, 1989, 2873, 8619

Step-4: Factors of 25861

List of positive integer factors of 25861 that divides 25857 without a remainder.

1, 11, 2351

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25857 and 25861. The biggest common factor number is the GCF number.
So the greatest common factor 25857 and 25861 is 1.

Also check out the Least Common Multiple of 25857 and 25861