What is the Greatest Common Factor of 18209 and 18221?

Greatest common factor (GCF) of 18209 and 18221 is 1.

GCF(18209,18221) = 1

We will now calculate the prime factors of 18209 and 18221, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18209 and 18221.

How to find the GCF of 18209 and 18221?

We will first find the prime factorization of 18209 and 18221. After we will calculate the factors of 18209 and 18221 and find the biggest common factor number .

Step-1: Prime Factorization of 18209

Prime factors of 18209 are 131, 139. Prime factorization of 18209 in exponential form is:

18209 = 131¹ × 139¹

Step-2: Prime Factorization of 18221

Prime factors of 18221 are 7, 19, 137. Prime factorization of 18221 in exponential form is:

18221 = 7¹ × 19¹ × 137¹

Step-3: Factors of 18209

List of positive integer factors of 18209 that divides 18209 without a remainder.

1, 131, 139

Step-4: Factors of 18221

List of positive integer factors of 18221 that divides 18209 without a remainder.

1, 7, 19, 133, 137, 959, 2603

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18209 and 18221. The biggest common factor number is the GCF number.
So the greatest common factor 18209 and 18221 is 1.

Also check out the Least Common Multiple of 18209 and 18221