What is the Greatest Common Factor of 7810 and 7815?

Greatest common factor (GCF) of 7810 and 7815 is 5.

GCF(7810,7815) = 5

We will now calculate the prime factors of 7810 and 7815, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7810 and 7815.

How to find the GCF of 7810 and 7815?

We will first find the prime factorization of 7810 and 7815. After we will calculate the factors of 7810 and 7815 and find the biggest common factor number .

Step-1: Prime Factorization of 7810

Prime factors of 7810 are 2, 5, 11, 71. Prime factorization of 7810 in exponential form is:

7810 = 2¹ × 5¹ × 11¹ × 71¹

Step-2: 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-3: Factors of 7810

List of positive integer factors of 7810 that divides 7810 without a remainder.

1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 3905

Step-4: Factors of 7815

List of positive integer factors of 7815 that divides 7810 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7810 and 7815. The biggest common factor number is the GCF number.
So the greatest common factor 7810 and 7815 is 5.

Also check out the Least Common Multiple of 7810 and 7815