What is the Greatest Common Factor of 18203 and 18220?

Greatest common factor (GCF) of 18203 and 18220 is 1.

GCF(18203,18220) = 1

We will now calculate the prime factors of 18203 and 18220, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18203 and 18220.

How to find the GCF of 18203 and 18220?

We will first find the prime factorization of 18203 and 18220. After we will calculate the factors of 18203 and 18220 and find the biggest common factor number .

Step-1: Prime Factorization of 18203

Prime factors of 18203 are 109, 167. Prime factorization of 18203 in exponential form is:

18203 = 109¹ × 167¹

Step-2: Prime Factorization of 18220

Prime factors of 18220 are 2, 5, 911. Prime factorization of 18220 in exponential form is:

18220 = 2² × 5¹ × 911¹

Step-3: Factors of 18203

List of positive integer factors of 18203 that divides 18203 without a remainder.

1, 109, 167

Step-4: Factors of 18220

List of positive integer factors of 18220 that divides 18203 without a remainder.

1, 2, 4, 5, 10, 20, 911, 1822, 3644, 4555, 9110

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18203 and 18220. The biggest common factor number is the GCF number.
So the greatest common factor 18203 and 18220 is 1.

Also check out the Least Common Multiple of 18203 and 18220