What is the Greatest Common Factor of 25705 and 25720?

Greatest common factor (GCF) of 25705 and 25720 is 5.

GCF(25705,25720) = 5

We will now calculate the prime factors of 25705 and 25720, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25705 and 25720.

How to find the GCF of 25705 and 25720?

We will first find the prime factorization of 25705 and 25720. After we will calculate the factors of 25705 and 25720 and find the biggest common factor number .

Step-1: Prime Factorization of 25705

Prime factors of 25705 are 5, 53, 97. Prime factorization of 25705 in exponential form is:

25705 = 5¹ × 53¹ × 97¹

Step-2: Prime Factorization of 25720

Prime factors of 25720 are 2, 5, 643. Prime factorization of 25720 in exponential form is:

25720 = 2³ × 5¹ × 643¹

Step-3: Factors of 25705

List of positive integer factors of 25705 that divides 25705 without a remainder.

1, 5, 53, 97, 265, 485, 5141

Step-4: Factors of 25720

List of positive integer factors of 25720 that divides 25705 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 5144, 6430, 12860

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25705 and 25720. The biggest common factor number is the GCF number.
So the greatest common factor 25705 and 25720 is 5.

Also check out the Least Common Multiple of 25705 and 25720