What is the Greatest Common Factor of 21703 and 21709?

Greatest common factor (GCF) of 21703 and 21709 is 1.

GCF(21703,21709) = 1

We will now calculate the prime factors of 21703 and 21709, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21703 and 21709.

How to find the GCF of 21703 and 21709?

We will first find the prime factorization of 21703 and 21709. After we will calculate the factors of 21703 and 21709 and find the biggest common factor number .

Step-1: Prime Factorization of 21703

Prime factors of 21703 are 11, 1973. Prime factorization of 21703 in exponential form is:

21703 = 11¹ × 1973¹

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 21703

List of positive integer factors of 21703 that divides 21703 without a remainder.

1, 11, 1973

Step-4: Factors of 21709

List of positive integer factors of 21709 that divides 21703 without a remainder.

1, 17, 1277

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21703 and 21709. The biggest common factor number is the GCF number.
So the greatest common factor 21703 and 21709 is 1.

Also check out the Least Common Multiple of 21703 and 21709