What is the Greatest Common Factor of 61800 and 61809?

Greatest common factor (GCF) of 61800 and 61809 is 3.

GCF(61800,61809) = 3

We will now calculate the prime factors of 61800 and 61809, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61800 and 61809.

How to find the GCF of 61800 and 61809?

We will first find the prime factorization of 61800 and 61809. After we will calculate the factors of 61800 and 61809 and find the biggest common factor number .

Step-1: Prime Factorization of 61800

Prime factors of 61800 are 2, 3, 5, 103. Prime factorization of 61800 in exponential form is:

61800 = 2³ × 3¹ × 5² × 103¹

Step-2: Prime Factorization of 61809

Prime factors of 61809 are 3, 11, 1873. Prime factorization of 61809 in exponential form is:

61809 = 3¹ × 11¹ × 1873¹

Step-3: Factors of 61800

List of positive integer factors of 61800 that divides 61800 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 60, 75, 100, 103, 120, 150, 200, 206, 300, 309, 412, 515, 600, 618, 824, 1030, 1236, 1545, 2060, 2472, 2575, 3090, 4120, 5150, 6180, 7725, 10300, 12360, 15450, 20600, 30900

Step-4: Factors of 61809

List of positive integer factors of 61809 that divides 61800 without a remainder.

1, 3, 11, 33, 1873, 5619, 20603

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61800 and 61809. The biggest common factor number is the GCF number.
So the greatest common factor 61800 and 61809 is 3.

Also check out the Least Common Multiple of 61800 and 61809