What is the Greatest Common Factor of 21704 and 21709?

Greatest common factor (GCF) of 21704 and 21709 is 1.

GCF(21704,21709) = 1

We will now calculate the prime factors of 21704 and 21709, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21704 and 21709.

How to find the GCF of 21704 and 21709?

We will first find the prime factorization of 21704 and 21709. After we will calculate the factors of 21704 and 21709 and find the biggest common factor number .

Step-1: Prime Factorization of 21704

Prime factors of 21704 are 2, 2713. Prime factorization of 21704 in exponential form is:

21704 = 2³ × 2713¹

Step-2: Prime Factorization of 21709

Prime factors of 21709 are 17, 1277. Prime factorization of 21709 in exponential form is:

21709 = 17¹ × 1277¹

Step-3: Factors of 21704

List of positive integer factors of 21704 that divides 21704 without a remainder.

1, 2, 4, 8, 2713, 5426, 10852

Step-4: Factors of 21709

List of positive integer factors of 21709 that divides 21704 without a remainder.

1, 17, 1277

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21704 and 21709. The biggest common factor number is the GCF number.
So the greatest common factor 21704 and 21709 is 1.

Also check out the Least Common Multiple of 21704 and 21709