What is the Greatest Common Factor of 19503 and 19518?

Greatest common factor (GCF) of 19503 and 19518 is 3.

GCF(19503,19518) = 3

We will now calculate the prime factors of 19503 and 19518, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19503 and 19518.

How to find the GCF of 19503 and 19518?

We will first find the prime factorization of 19503 and 19518. After we will calculate the factors of 19503 and 19518 and find the biggest common factor number .

Step-1: Prime Factorization of 19503

Prime factors of 19503 are 3, 11, 197. Prime factorization of 19503 in exponential form is:

19503 = 3² × 11¹ × 197¹

Step-2: Prime Factorization of 19518

Prime factors of 19518 are 2, 3, 3253. Prime factorization of 19518 in exponential form is:

19518 = 2¹ × 3¹ × 3253¹

Step-3: Factors of 19503

List of positive integer factors of 19503 that divides 19503 without a remainder.

1, 3, 9, 11, 33, 99, 197, 591, 1773, 2167, 6501

Step-4: Factors of 19518

List of positive integer factors of 19518 that divides 19503 without a remainder.

1, 2, 3, 6, 3253, 6506, 9759

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19503 and 19518. The biggest common factor number is the GCF number.
So the greatest common factor 19503 and 19518 is 3.

Also check out the Least Common Multiple of 19503 and 19518