What is the Greatest Common Factor of 20390 and 20403?

Greatest common factor (GCF) of 20390 and 20403 is 1.

GCF(20390,20403) = 1

We will now calculate the prime factors of 20390 and 20403, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20390 and 20403.

How to find the GCF of 20390 and 20403?

We will first find the prime factorization of 20390 and 20403. After we will calculate the factors of 20390 and 20403 and find the biggest common factor number .

Step-1: Prime Factorization of 20390

Prime factors of 20390 are 2, 5, 2039. Prime factorization of 20390 in exponential form is:

20390 = 2¹ × 5¹ × 2039¹

Step-2: Prime Factorization of 20403

Prime factors of 20403 are 3, 2267. Prime factorization of 20403 in exponential form is:

20403 = 3² × 2267¹

Step-3: Factors of 20390

List of positive integer factors of 20390 that divides 20390 without a remainder.

1, 2, 5, 10, 2039, 4078, 10195

Step-4: Factors of 20403

List of positive integer factors of 20403 that divides 20390 without a remainder.

1, 3, 9, 2267, 6801

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20390 and 20403. The biggest common factor number is the GCF number.
So the greatest common factor 20390 and 20403 is 1.

Also check out the Least Common Multiple of 20390 and 20403