What is the Greatest Common Factor of 21604 and 21617?

Greatest common factor (GCF) of 21604 and 21617 is 1.

GCF(21604,21617) = 1

We will now calculate the prime factors of 21604 and 21617, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21604 and 21617.

How to find the GCF of 21604 and 21617?

We will first find the prime factorization of 21604 and 21617. After we will calculate the factors of 21604 and 21617 and find the biggest common factor number .

Step-1: Prime Factorization of 21604

Prime factors of 21604 are 2, 11, 491. Prime factorization of 21604 in exponential form is:

21604 = 2² × 11¹ × 491¹

Step-2: Prime Factorization of 21617

Prime factors of 21617 are 21617. Prime factorization of 21617 in exponential form is:

21617 = 21617¹

Step-3: Factors of 21604

List of positive integer factors of 21604 that divides 21604 without a remainder.

1, 2, 4, 11, 22, 44, 491, 982, 1964, 5401, 10802

Step-4: Factors of 21617

List of positive integer factors of 21617 that divides 21604 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21604 and 21617. The biggest common factor number is the GCF number.
So the greatest common factor 21604 and 21617 is 1.

Also check out the Least Common Multiple of 21604 and 21617