What is the Greatest Common Factor of 11990 and 12009?

Greatest common factor (GCF) of 11990 and 12009 is 1.

GCF(11990,12009) = 1

We will now calculate the prime factors of 11990 and 12009, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 11990 and 12009.

How to find the GCF of 11990 and 12009?

We will first find the prime factorization of 11990 and 12009. After we will calculate the factors of 11990 and 12009 and find the biggest common factor number .

Step-1: Prime Factorization of 11990

Prime factors of 11990 are 2, 5, 11, 109. Prime factorization of 11990 in exponential form is:

11990 = 2¹ × 5¹ × 11¹ × 109¹

Step-2: Prime Factorization of 12009

Prime factors of 12009 are 3, 4003. Prime factorization of 12009 in exponential form is:

12009 = 3¹ × 4003¹

Step-3: Factors of 11990

List of positive integer factors of 11990 that divides 11990 without a remainder.

1, 2, 5, 10, 11, 22, 55, 109, 110, 218, 545, 1090, 1199, 2398, 5995

Step-4: Factors of 12009

List of positive integer factors of 12009 that divides 11990 without a remainder.

1, 3, 4003

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 11990 and 12009. The biggest common factor number is the GCF number.
So the greatest common factor 11990 and 12009 is 1.

Also check out the Least Common Multiple of 11990 and 12009