What is the Greatest Common Factor of 18015 and 18020?

Greatest common factor (GCF) of 18015 and 18020 is 5.

GCF(18015,18020) = 5

We will now calculate the prime factors of 18015 and 18020, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18015 and 18020.

How to find the GCF of 18015 and 18020?

We will first find the prime factorization of 18015 and 18020. After we will calculate the factors of 18015 and 18020 and find the biggest common factor number .

Step-1: Prime Factorization of 18015

Prime factors of 18015 are 3, 5, 1201. Prime factorization of 18015 in exponential form is:

18015 = 3¹ × 5¹ × 1201¹

Step-2: Prime Factorization of 18020

Prime factors of 18020 are 2, 5, 17, 53. Prime factorization of 18020 in exponential form is:

18020 = 2² × 5¹ × 17¹ × 53¹

Step-3: Factors of 18015

List of positive integer factors of 18015 that divides 18015 without a remainder.

1, 3, 5, 15, 1201, 3603, 6005

Step-4: Factors of 18020

List of positive integer factors of 18020 that divides 18015 without a remainder.

1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 85, 106, 170, 212, 265, 340, 530, 901, 1060, 1802, 3604, 4505, 9010

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18015 and 18020. The biggest common factor number is the GCF number.
So the greatest common factor 18015 and 18020 is 5.

Also check out the Least Common Multiple of 18015 and 18020