What is the Greatest Common Factor of 20503 and 20521?

Greatest common factor (GCF) of 20503 and 20521 is 1.

GCF(20503,20521) = 1

We will now calculate the prime factors of 20503 and 20521, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20503 and 20521.

How to find the GCF of 20503 and 20521?

We will first find the prime factorization of 20503 and 20521. After we will calculate the factors of 20503 and 20521 and find the biggest common factor number .

Step-1: Prime Factorization of 20503

Prime factors of 20503 are 7, 29, 101. Prime factorization of 20503 in exponential form is:

20503 = 7¹ × 29¹ × 101¹

Step-2: Prime Factorization of 20521

Prime factors of 20521 are 20521. Prime factorization of 20521 in exponential form is:

20521 = 20521¹

Step-3: Factors of 20503

List of positive integer factors of 20503 that divides 20503 without a remainder.

1, 7, 29, 101, 203, 707, 2929

Step-4: Factors of 20521

List of positive integer factors of 20521 that divides 20503 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20503 and 20521. The biggest common factor number is the GCF number.
So the greatest common factor 20503 and 20521 is 1.

Also check out the Least Common Multiple of 20503 and 20521