What is the Greatest Common Factor of 85805 and 85809?

Greatest common factor (GCF) of 85805 and 85809 is 1.

GCF(85805,85809) = 1

We will now calculate the prime factors of 85805 and 85809, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 85805 and 85809.

How to find the GCF of 85805 and 85809?

We will first find the prime factorization of 85805 and 85809. After we will calculate the factors of 85805 and 85809 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 85809

Prime factors of 85809 are 3, 28603. Prime factorization of 85809 in exponential form is:

85809 = 3¹ × 28603¹

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 85809

List of positive integer factors of 85809 that divides 85805 without a remainder.

1, 3, 28603

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 85805 and 85809. The biggest common factor number is the GCF number.
So the greatest common factor 85805 and 85809 is 1.

Also check out the Least Common Multiple of 85805 and 85809