What is the Greatest Common Factor of 20689 and 20703?

Greatest common factor (GCF) of 20689 and 20703 is 1.

GCF(20689,20703) = 1

We will now calculate the prime factors of 20689 and 20703, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20689 and 20703.

How to find the GCF of 20689 and 20703?

We will first find the prime factorization of 20689 and 20703. After we will calculate the factors of 20689 and 20703 and find the biggest common factor number .

Step-1: Prime Factorization of 20689

Prime factors of 20689 are 17, 1217. Prime factorization of 20689 in exponential form is:

20689 = 17¹ × 1217¹

Step-2: Prime Factorization of 20703

Prime factors of 20703 are 3, 67, 103. Prime factorization of 20703 in exponential form is:

20703 = 3¹ × 67¹ × 103¹

Step-3: Factors of 20689

List of positive integer factors of 20689 that divides 20689 without a remainder.

1, 17, 1217

Step-4: Factors of 20703

List of positive integer factors of 20703 that divides 20689 without a remainder.

1, 3, 67, 103, 201, 309, 6901

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20689 and 20703. The biggest common factor number is the GCF number.
So the greatest common factor 20689 and 20703 is 1.

Also check out the Least Common Multiple of 20689 and 20703