What is the Greatest Common Factor of 20085 and 20089?

Greatest common factor (GCF) of 20085 and 20089 is 1.

GCF(20085,20089) = 1

We will now calculate the prime factors of 20085 and 20089, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20085 and 20089.

How to find the GCF of 20085 and 20089?

We will first find the prime factorization of 20085 and 20089. After we will calculate the factors of 20085 and 20089 and find the biggest common factor number .

Step-1: Prime Factorization of 20085

Prime factors of 20085 are 3, 5, 13, 103. Prime factorization of 20085 in exponential form is:

20085 = 3¹ × 5¹ × 13¹ × 103¹

Step-2: Prime Factorization of 20089

Prime factors of 20089 are 20089. Prime factorization of 20089 in exponential form is:

20089 = 20089¹

Step-3: Factors of 20085

List of positive integer factors of 20085 that divides 20085 without a remainder.

1, 3, 5, 13, 15, 39, 65, 103, 195, 309, 515, 1339, 1545, 4017, 6695

Step-4: Factors of 20089

List of positive integer factors of 20089 that divides 20085 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20085 and 20089. The biggest common factor number is the GCF number.
So the greatest common factor 20085 and 20089 is 1.

Also check out the Least Common Multiple of 20085 and 20089