What is the Greatest Common Factor of 75780 and 75789?

Greatest common factor (GCF) of 75780 and 75789 is 9.

GCF(75780,75789) = 9

We will now calculate the prime factors of 75780 and 75789, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 75780 and 75789.

How to find the GCF of 75780 and 75789?

We will first find the prime factorization of 75780 and 75789. After we will calculate the factors of 75780 and 75789 and find the biggest common factor number .

Step-1: Prime Factorization of 75780

Prime factors of 75780 are 2, 3, 5, 421. Prime factorization of 75780 in exponential form is:

75780 = 2² × 3² × 5¹ × 421¹

Step-2: Prime Factorization of 75789

Prime factors of 75789 are 3, 7, 401. Prime factorization of 75789 in exponential form is:

75789 = 3³ × 7¹ × 401¹

Step-3: Factors of 75780

List of positive integer factors of 75780 that divides 75780 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 421, 842, 1263, 1684, 2105, 2526, 3789, 4210, 5052, 6315, 7578, 8420, 12630, 15156, 18945, 25260, 37890

Step-4: Factors of 75789

List of positive integer factors of 75789 that divides 75780 without a remainder.

1, 3, 7, 9, 21, 27, 63, 189, 401, 1203, 2807, 3609, 8421, 10827, 25263

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 75780 and 75789. The biggest common factor number is the GCF number.
So the greatest common factor 75780 and 75789 is 9.

Also check out the Least Common Multiple of 75780 and 75789