What is the Greatest Common Factor of 18765 and 18781?

Greatest common factor (GCF) of 18765 and 18781 is 1.

GCF(18765,18781) = 1

We will now calculate the prime factors of 18765 and 18781, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18765 and 18781.

How to find the GCF of 18765 and 18781?

We will first find the prime factorization of 18765 and 18781. After we will calculate the factors of 18765 and 18781 and find the biggest common factor number .

Step-1: Prime Factorization of 18765

Prime factors of 18765 are 3, 5, 139. Prime factorization of 18765 in exponential form is:

18765 = 3³ × 5¹ × 139¹

Step-2: Prime Factorization of 18781

Prime factors of 18781 are 7, 2683. Prime factorization of 18781 in exponential form is:

18781 = 7¹ × 2683¹

Step-3: Factors of 18765

List of positive integer factors of 18765 that divides 18765 without a remainder.

1, 3, 5, 9, 15, 27, 45, 135, 139, 417, 695, 1251, 2085, 3753, 6255

Step-4: Factors of 18781

List of positive integer factors of 18781 that divides 18765 without a remainder.

1, 7, 2683

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18765 and 18781. The biggest common factor number is the GCF number.
So the greatest common factor 18765 and 18781 is 1.

Also check out the Least Common Multiple of 18765 and 18781