What is the Greatest Common Factor of 19500 and 19515?

Greatest common factor (GCF) of 19500 and 19515 is 15.

GCF(19500,19515) = 15

We will now calculate the prime factors of 19500 and 19515, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19500 and 19515.

How to find the GCF of 19500 and 19515?

We will first find the prime factorization of 19500 and 19515. After we will calculate the factors of 19500 and 19515 and find the biggest common factor number .

Step-1: Prime Factorization of 19500

Prime factors of 19500 are 2, 3, 5, 13. Prime factorization of 19500 in exponential form is:

19500 = 2² × 3¹ × 5³ × 13¹

Step-2: Prime Factorization of 19515

Prime factors of 19515 are 3, 5, 1301. Prime factorization of 19515 in exponential form is:

19515 = 3¹ × 5¹ × 1301¹

Step-3: Factors of 19500

List of positive integer factors of 19500 that divides 19500 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 125, 130, 150, 156, 195, 250, 260, 300, 325, 375, 390, 500, 650, 750, 780, 975, 1300, 1500, 1625, 1950, 3250, 3900, 4875, 6500, 9750

Step-4: Factors of 19515

List of positive integer factors of 19515 that divides 19500 without a remainder.

1, 3, 5, 15, 1301, 3903, 6505

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19500 and 19515. The biggest common factor number is the GCF number.
So the greatest common factor 19500 and 19515 is 15.

Also check out the Least Common Multiple of 19500 and 19515