What is the Greatest Common Factor of 15209 and 15221?

Greatest common factor (GCF) of 15209 and 15221 is 1.

GCF(15209,15221) = 1

We will now calculate the prime factors of 15209 and 15221, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15209 and 15221.

How to find the GCF of 15209 and 15221?

We will first find the prime factorization of 15209 and 15221. After we will calculate the factors of 15209 and 15221 and find the biggest common factor number .

Step-1: Prime Factorization of 15209

Prime factors of 15209 are 67, 227. Prime factorization of 15209 in exponential form is:

15209 = 67¹ × 227¹

Step-2: Prime Factorization of 15221

Prime factors of 15221 are 31, 491. Prime factorization of 15221 in exponential form is:

15221 = 31¹ × 491¹

Step-3: Factors of 15209

List of positive integer factors of 15209 that divides 15209 without a remainder.

1, 67, 227

Step-4: Factors of 15221

List of positive integer factors of 15221 that divides 15209 without a remainder.

1, 31, 491

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15209 and 15221. The biggest common factor number is the GCF number.
So the greatest common factor 15209 and 15221 is 1.

Also check out the Least Common Multiple of 15209 and 15221