What is the Greatest Common Factor of 28009 and 28015?

Greatest common factor (GCF) of 28009 and 28015 is 1.

GCF(28009,28015) = 1

We will now calculate the prime factors of 28009 and 28015, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28009 and 28015.

How to find the GCF of 28009 and 28015?

We will first find the prime factorization of 28009 and 28015. After we will calculate the factors of 28009 and 28015 and find the biggest common factor number .

Step-1: Prime Factorization of 28009

Prime factors of 28009 are 37, 757. Prime factorization of 28009 in exponential form is:

28009 = 37¹ × 757¹

Step-2: Prime Factorization of 28015

Prime factors of 28015 are 5, 13, 431. Prime factorization of 28015 in exponential form is:

28015 = 5¹ × 13¹ × 431¹

Step-3: Factors of 28009

List of positive integer factors of 28009 that divides 28009 without a remainder.

1, 37, 757

Step-4: Factors of 28015

List of positive integer factors of 28015 that divides 28009 without a remainder.

1, 5, 13, 65, 431, 2155, 5603

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28009 and 28015. The biggest common factor number is the GCF number.
So the greatest common factor 28009 and 28015 is 1.

Also check out the Least Common Multiple of 28009 and 28015