What is the Greatest Common Factor of 72815 and 72820?

Greatest common factor (GCF) of 72815 and 72820 is 5.

GCF(72815,72820) = 5

We will now calculate the prime factors of 72815 and 72820, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72815 and 72820.

How to find the GCF of 72815 and 72820?

We will first find the prime factorization of 72815 and 72820. After we will calculate the factors of 72815 and 72820 and find the biggest common factor number .

Step-1: Prime Factorization of 72815

Prime factors of 72815 are 5, 14563. Prime factorization of 72815 in exponential form is:

72815 = 5¹ × 14563¹

Step-2: Prime Factorization of 72820

Prime factors of 72820 are 2, 5, 11, 331. Prime factorization of 72820 in exponential form is:

72820 = 2² × 5¹ × 11¹ × 331¹

Step-3: Factors of 72815

List of positive integer factors of 72815 that divides 72815 without a remainder.

1, 5, 14563

Step-4: Factors of 72820

List of positive integer factors of 72820 that divides 72815 without a remainder.

1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 331, 662, 1324, 1655, 3310, 3641, 6620, 7282, 14564, 18205, 36410

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72815 and 72820. The biggest common factor number is the GCF number.
So the greatest common factor 72815 and 72820 is 5.

Also check out the Least Common Multiple of 72815 and 72820