What is the Greatest Common Factor of 25840 and 25858?

Greatest common factor (GCF) of 25840 and 25858 is 2.

GCF(25840,25858) = 2

We will now calculate the prime factors of 25840 and 25858, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25840 and 25858.

How to find the GCF of 25840 and 25858?

We will first find the prime factorization of 25840 and 25858. After we will calculate the factors of 25840 and 25858 and find the biggest common factor number .

Step-1: Prime Factorization of 25840

Prime factors of 25840 are 2, 5, 17, 19. Prime factorization of 25840 in exponential form is:

25840 = 2⁴ × 5¹ × 17¹ × 19¹

Step-2: Prime Factorization of 25858

Prime factors of 25858 are 2, 7, 1847. Prime factorization of 25858 in exponential form is:

25858 = 2¹ × 7¹ × 1847¹

Step-3: Factors of 25840

List of positive integer factors of 25840 that divides 25840 without a remainder.

1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 760, 1292, 1360, 1520, 1615, 2584, 3230, 5168, 6460, 12920

Step-4: Factors of 25858

List of positive integer factors of 25858 that divides 25840 without a remainder.

1, 2, 7, 14, 1847, 3694, 12929

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25840 and 25858. The biggest common factor number is the GCF number.
So the greatest common factor 25840 and 25858 is 2.

Also check out the Least Common Multiple of 25840 and 25858