What is the Greatest Common Factor of 20303 and 20309?

Greatest common factor (GCF) of 20303 and 20309 is 1.

GCF(20303,20309) = 1

We will now calculate the prime factors of 20303 and 20309, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20303 and 20309.

How to find the GCF of 20303 and 20309?

We will first find the prime factorization of 20303 and 20309. After we will calculate the factors of 20303 and 20309 and find the biggest common factor number .

Step-1: Prime Factorization of 20303

Prime factors of 20303 are 79, 257. Prime factorization of 20303 in exponential form is:

20303 = 79¹ × 257¹

Step-2: Prime Factorization of 20309

Prime factors of 20309 are 23, 883. Prime factorization of 20309 in exponential form is:

20309 = 23¹ × 883¹

Step-3: Factors of 20303

List of positive integer factors of 20303 that divides 20303 without a remainder.

1, 79, 257

Step-4: Factors of 20309

List of positive integer factors of 20309 that divides 20303 without a remainder.

1, 23, 883

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20303 and 20309. The biggest common factor number is the GCF number.
So the greatest common factor 20303 and 20309 is 1.

Also check out the Least Common Multiple of 20303 and 20309