What is the Greatest Common Factor of 25815 and 25831?

Greatest common factor (GCF) of 25815 and 25831 is 1.

GCF(25815,25831) = 1

We will now calculate the prime factors of 25815 and 25831, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25815 and 25831.

How to find the GCF of 25815 and 25831?

We will first find the prime factorization of 25815 and 25831. After we will calculate the factors of 25815 and 25831 and find the biggest common factor number .

Step-1: Prime Factorization of 25815

Prime factors of 25815 are 3, 5, 1721. Prime factorization of 25815 in exponential form is:

25815 = 3¹ × 5¹ × 1721¹

Step-2: Prime Factorization of 25831

Prime factors of 25831 are 13, 1987. Prime factorization of 25831 in exponential form is:

25831 = 13¹ × 1987¹

Step-3: Factors of 25815

List of positive integer factors of 25815 that divides 25815 without a remainder.

1, 3, 5, 15, 1721, 5163, 8605

Step-4: Factors of 25831

List of positive integer factors of 25831 that divides 25815 without a remainder.

1, 13, 1987

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25815 and 25831. The biggest common factor number is the GCF number.
So the greatest common factor 25815 and 25831 is 1.

Also check out the Least Common Multiple of 25815 and 25831