What is the Greatest Common Factor of 7815 and 7819?

Greatest common factor (GCF) of 7815 and 7819 is 1.

GCF(7815,7819) = 1

We will now calculate the prime factors of 7815 and 7819, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7815 and 7819.

How to find the GCF of 7815 and 7819?

We will first find the prime factorization of 7815 and 7819. After we will calculate the factors of 7815 and 7819 and find the biggest common factor number .

Step-1: Prime Factorization of 7815

Prime factors of 7815 are 3, 5, 521. Prime factorization of 7815 in exponential form is:

7815 = 3¹ × 5¹ × 521¹

Step-2: Prime Factorization of 7819

Prime factors of 7819 are 7, 1117. Prime factorization of 7819 in exponential form is:

7819 = 7¹ × 1117¹

Step-3: Factors of 7815

List of positive integer factors of 7815 that divides 7815 without a remainder.

1, 3, 5, 15, 521, 1563, 2605

Step-4: Factors of 7819

List of positive integer factors of 7819 that divides 7815 without a remainder.

1, 7, 1117

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7815 and 7819. The biggest common factor number is the GCF number.
So the greatest common factor 7815 and 7819 is 1.

Also check out the Least Common Multiple of 7815 and 7819