What is the Greatest Common Factor of 1999 and 2018?

Greatest common factor (GCF) of 1999 and 2018 is 1.

GCF(1999,2018) = 1

We will now calculate the prime factors of 1999 and 2018, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1999 and 2018.

How to find the GCF of 1999 and 2018?

We will first find the prime factorization of 1999 and 2018. After we will calculate the factors of 1999 and 2018 and find the biggest common factor number .

Step-1: Prime Factorization of 1999

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

1999 = 1999¹

Step-2: Prime Factorization of 2018

Prime factors of 2018 are 2, 1009. Prime factorization of 2018 in exponential form is:

2018 = 2¹ × 1009¹

Step-3: Factors of 1999

List of positive integer factors of 1999 that divides 1999 without a remainder.

Step-4: Factors of 2018

List of positive integer factors of 2018 that divides 1999 without a remainder.

1, 2, 1009

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1999 and 2018. The biggest common factor number is the GCF number.
So the greatest common factor 1999 and 2018 is 1.

Also check out the Least Common Multiple of 1999 and 2018