What is the Greatest Common Factor of 8515 and 8520?

Greatest common factor (GCF) of 8515 and 8520 is 5.

GCF(8515,8520) = 5

We will now calculate the prime factors of 8515 and 8520, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 8515 and 8520.

How to find the GCF of 8515 and 8520?

We will first find the prime factorization of 8515 and 8520. After we will calculate the factors of 8515 and 8520 and find the biggest common factor number .

Step-1: Prime Factorization of 8515

Prime factors of 8515 are 5, 13, 131. Prime factorization of 8515 in exponential form is:

8515 = 5¹ × 13¹ × 131¹

Step-2: Prime Factorization of 8520

Prime factors of 8520 are 2, 3, 5, 71. Prime factorization of 8520 in exponential form is:

8520 = 2³ × 3¹ × 5¹ × 71¹

Step-3: Factors of 8515

List of positive integer factors of 8515 that divides 8515 without a remainder.

1, 5, 13, 65, 131, 655, 1703

Step-4: Factors of 8520

List of positive integer factors of 8520 that divides 8515 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2840, 4260

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 8515 and 8520. The biggest common factor number is the GCF number.
So the greatest common factor 8515 and 8520 is 5.

Also check out the Least Common Multiple of 8515 and 8520