What is the Greatest Common Factor of 23815 and 23820?

Greatest common factor (GCF) of 23815 and 23820 is 5.

GCF(23815,23820) = 5

We will now calculate the prime factors of 23815 and 23820, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 23815 and 23820.

How to find the GCF of 23815 and 23820?

We will first find the prime factorization of 23815 and 23820. After we will calculate the factors of 23815 and 23820 and find the biggest common factor number .

Step-1: Prime Factorization of 23815

Prime factors of 23815 are 5, 11, 433. Prime factorization of 23815 in exponential form is:

23815 = 5¹ × 11¹ × 433¹

Step-2: Prime Factorization of 23820

Prime factors of 23820 are 2, 3, 5, 397. Prime factorization of 23820 in exponential form is:

23820 = 2² × 3¹ × 5¹ × 397¹

Step-3: Factors of 23815

List of positive integer factors of 23815 that divides 23815 without a remainder.

1, 5, 11, 55, 433, 2165, 4763

Step-4: Factors of 23820

List of positive integer factors of 23820 that divides 23815 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 397, 794, 1191, 1588, 1985, 2382, 3970, 4764, 5955, 7940, 11910

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 23815 and 23820. The biggest common factor number is the GCF number.
So the greatest common factor 23815 and 23820 is 5.

Also check out the Least Common Multiple of 23815 and 23820