What is the Greatest Common Factor of 17991 and 18003?

Greatest common factor (GCF) of 17991 and 18003 is 3.

GCF(17991,18003) = 3

We will now calculate the prime factors of 17991 and 18003, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 17991 and 18003.

How to find the GCF of 17991 and 18003?

We will first find the prime factorization of 17991 and 18003. After we will calculate the factors of 17991 and 18003 and find the biggest common factor number .

Step-1: Prime Factorization of 17991

Prime factors of 17991 are 3, 1999. Prime factorization of 17991 in exponential form is:

17991 = 3² × 1999¹

Step-2: Prime Factorization of 18003

Prime factors of 18003 are 3, 17, 353. Prime factorization of 18003 in exponential form is:

18003 = 3¹ × 17¹ × 353¹

Step-3: Factors of 17991

List of positive integer factors of 17991 that divides 17991 without a remainder.

1, 3, 9, 1999, 5997

Step-4: Factors of 18003

List of positive integer factors of 18003 that divides 17991 without a remainder.

1, 3, 17, 51, 353, 1059, 6001

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 17991 and 18003. The biggest common factor number is the GCF number.
So the greatest common factor 17991 and 18003 is 3.

Also check out the Least Common Multiple of 17991 and 18003