What is the Greatest Common Factor of 85809 and 85821?

Greatest common factor (GCF) of 85809 and 85821 is 3.

GCF(85809,85821) = 3

We will now calculate the prime factors of 85809 and 85821, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 85809 and 85821.

How to find the GCF of 85809 and 85821?

We will first find the prime factorization of 85809 and 85821. After we will calculate the factors of 85809 and 85821 and find the biggest common factor number .

Step-1: Prime Factorization of 85809

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

85809 = 3¹ × 28603¹

Step-2: Prime Factorization of 85821

Prime factors of 85821 are 3, 28607. Prime factorization of 85821 in exponential form is:

85821 = 3¹ × 28607¹

Step-3: Factors of 85809

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

1, 3, 28603

Step-4: Factors of 85821

List of positive integer factors of 85821 that divides 85809 without a remainder.

1, 3, 28607

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 85809 and 85821. The biggest common factor number is the GCF number.
So the greatest common factor 85809 and 85821 is 3.

Also check out the Least Common Multiple of 85809 and 85821