What is the Greatest Common Factor of 1800 and 1818?

Greatest common factor (GCF) of 1800 and 1818 is 18.

GCF(1800,1818) = 18

We will now calculate the prime factors of 1800 and 1818, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1800 and 1818.

How to find the GCF of 1800 and 1818?

We will first find the prime factorization of 1800 and 1818. After we will calculate the factors of 1800 and 1818 and find the biggest common factor number .

Step-1: Prime Factorization of 1800

Prime factors of 1800 are 2, 3, 5. Prime factorization of 1800 in exponential form is:

1800 = 2³ × 3² × 5²

Step-2: Prime Factorization of 1818

Prime factors of 1818 are 2, 3, 101. Prime factorization of 1818 in exponential form is:

1818 = 2¹ × 3² × 101¹

Step-3: Factors of 1800

List of positive integer factors of 1800 that divides 1800 without a remainder.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 72, 75, 90, 100, 120, 150, 180, 200, 225, 300, 360, 450, 600, 900

Step-4: Factors of 1818

List of positive integer factors of 1818 that divides 1800 without a remainder.

1, 2, 3, 6, 9, 18, 101, 202, 303, 606, 909

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1800 and 1818. The biggest common factor number is the GCF number.
So the greatest common factor 1800 and 1818 is 18.

Also check out the Least Common Multiple of 1800 and 1818