What is the Greatest Common Factor of 20509 and 20519?

Greatest common factor (GCF) of 20509 and 20519 is 1.

GCF(20509,20519) = 1

We will now calculate the prime factors of 20509 and 20519, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20509 and 20519.

How to find the GCF of 20509 and 20519?

We will first find the prime factorization of 20509 and 20519. After we will calculate the factors of 20509 and 20519 and find the biggest common factor number .

Step-1: Prime Factorization of 20509

Prime factors of 20509 are 20509. Prime factorization of 20509 in exponential form is:

20509 = 20509¹

Step-2: Prime Factorization of 20519

Prime factors of 20519 are 17, 71. Prime factorization of 20519 in exponential form is:

20519 = 17² × 71¹

Step-3: Factors of 20509

List of positive integer factors of 20509 that divides 20509 without a remainder.

Step-4: Factors of 20519

List of positive integer factors of 20519 that divides 20509 without a remainder.

1, 17, 71, 289, 1207

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20509 and 20519. The biggest common factor number is the GCF number.
So the greatest common factor 20509 and 20519 is 1.

Also check out the Least Common Multiple of 20509 and 20519