What is the Greatest Common Factor of 78515 and 78520?

Greatest common factor (GCF) of 78515 and 78520 is 5.

GCF(78515,78520) = 5

We will now calculate the prime factors of 78515 and 78520, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78515 and 78520.

How to find the GCF of 78515 and 78520?

We will first find the prime factorization of 78515 and 78520. After we will calculate the factors of 78515 and 78520 and find the biggest common factor number .

Step-1: Prime Factorization of 78515

Prime factors of 78515 are 5, 41, 383. Prime factorization of 78515 in exponential form is:

78515 = 5¹ × 41¹ × 383¹

Step-2: Prime Factorization of 78520

Prime factors of 78520 are 2, 5, 13, 151. Prime factorization of 78520 in exponential form is:

78520 = 2³ × 5¹ × 13¹ × 151¹

Step-3: Factors of 78515

List of positive integer factors of 78515 that divides 78515 without a remainder.

1, 5, 41, 205, 383, 1915, 15703

Step-4: Factors of 78520

List of positive integer factors of 78520 that divides 78515 without a remainder.

1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 151, 260, 302, 520, 604, 755, 1208, 1510, 1963, 3020, 3926, 6040, 7852, 9815, 15704, 19630, 39260

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78515 and 78520. The biggest common factor number is the GCF number.
So the greatest common factor 78515 and 78520 is 5.

Also check out the Least Common Multiple of 78515 and 78520