What is the Greatest Common Factor of 18780 and 18789?

Greatest common factor (GCF) of 18780 and 18789 is 3.

GCF(18780,18789) = 3

We will now calculate the prime factors of 18780 and 18789, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18780 and 18789.

How to find the GCF of 18780 and 18789?

We will first find the prime factorization of 18780 and 18789. After we will calculate the factors of 18780 and 18789 and find the biggest common factor number .

Step-1: Prime Factorization of 18780

Prime factors of 18780 are 2, 3, 5, 313. Prime factorization of 18780 in exponential form is:

18780 = 2² × 3¹ × 5¹ × 313¹

Step-2: Prime Factorization of 18789

Prime factors of 18789 are 3, 6263. Prime factorization of 18789 in exponential form is:

18789 = 3¹ × 6263¹

Step-3: Factors of 18780

List of positive integer factors of 18780 that divides 18780 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 313, 626, 939, 1252, 1565, 1878, 3130, 3756, 4695, 6260, 9390

Step-4: Factors of 18789

List of positive integer factors of 18789 that divides 18780 without a remainder.

1, 3, 6263

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18780 and 18789. The biggest common factor number is the GCF number.
So the greatest common factor 18780 and 18789 is 3.

Also check out the Least Common Multiple of 18780 and 18789