What is the Greatest Common Factor of 85805 and 85810?

Greatest common factor (GCF) of 85805 and 85810 is 5.

GCF(85805,85810) = 5

We will now calculate the prime factors of 85805 and 85810, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 85805 and 85810.

How to find the GCF of 85805 and 85810?

We will first find the prime factorization of 85805 and 85810. After we will calculate the factors of 85805 and 85810 and find the biggest common factor number .

Step-1: Prime Factorization of 85805

Prime factors of 85805 are 5, 131. Prime factorization of 85805 in exponential form is:

85805 = 5¹ × 131²

Step-2: Prime Factorization of 85810

Prime factors of 85810 are 2, 5, 8581. Prime factorization of 85810 in exponential form is:

85810 = 2¹ × 5¹ × 8581¹

Step-3: Factors of 85805

List of positive integer factors of 85805 that divides 85805 without a remainder.

1, 5, 131, 655, 17161

Step-4: Factors of 85810

List of positive integer factors of 85810 that divides 85805 without a remainder.

1, 2, 5, 10, 8581, 17162, 42905

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 85805 and 85810. The biggest common factor number is the GCF number.
So the greatest common factor 85805 and 85810 is 5.

Also check out the Least Common Multiple of 85805 and 85810