What is the Greatest Common Factor of 7845 and 7851?

Greatest common factor (GCF) of 7845 and 7851 is 3.

GCF(7845,7851) = 3

We will now calculate the prime factors of 7845 and 7851, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7845 and 7851.

How to find the GCF of 7845 and 7851?

We will first find the prime factorization of 7845 and 7851. After we will calculate the factors of 7845 and 7851 and find the biggest common factor number .

Step-1: Prime Factorization of 7845

Prime factors of 7845 are 3, 5, 523. Prime factorization of 7845 in exponential form is:

7845 = 3¹ × 5¹ × 523¹

Step-2: Prime Factorization of 7851

Prime factors of 7851 are 3, 2617. Prime factorization of 7851 in exponential form is:

7851 = 3¹ × 2617¹

Step-3: Factors of 7845

List of positive integer factors of 7845 that divides 7845 without a remainder.

1, 3, 5, 15, 523, 1569, 2615

Step-4: Factors of 7851

List of positive integer factors of 7851 that divides 7845 without a remainder.

1, 3, 2617

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7845 and 7851. The biggest common factor number is the GCF number.
So the greatest common factor 7845 and 7851 is 3.

Also check out the Least Common Multiple of 7845 and 7851