What is the Greatest Common Factor of 20290 and 20309?

Greatest common factor (GCF) of 20290 and 20309 is 1.

GCF(20290,20309) = 1

We will now calculate the prime factors of 20290 and 20309, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20290 and 20309.

How to find the GCF of 20290 and 20309?

We will first find the prime factorization of 20290 and 20309. After we will calculate the factors of 20290 and 20309 and find the biggest common factor number .

Step-1: Prime Factorization of 20290

Prime factors of 20290 are 2, 5, 2029. Prime factorization of 20290 in exponential form is:

20290 = 2¹ × 5¹ × 2029¹

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 20290

List of positive integer factors of 20290 that divides 20290 without a remainder.

1, 2, 5, 10, 2029, 4058, 10145

Step-4: Factors of 20309

List of positive integer factors of 20309 that divides 20290 without a remainder.

1, 23, 883

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20290 and 20309. The biggest common factor number is the GCF number.
So the greatest common factor 20290 and 20309 is 1.

Also check out the Least Common Multiple of 20290 and 20309