What is the Greatest Common Factor of 11990 and 12001?

Greatest common factor (GCF) of 11990 and 12001 is 11.

GCF(11990,12001) = 11

We will now calculate the prime factors of 11990 and 12001, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 11990 and 12001.

How to find the GCF of 11990 and 12001?

We will first find the prime factorization of 11990 and 12001. After we will calculate the factors of 11990 and 12001 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 12001

Prime factors of 12001 are 11, 1091. Prime factorization of 12001 in exponential form is:

12001 = 11¹ × 1091¹

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 12001

List of positive integer factors of 12001 that divides 11990 without a remainder.

1, 11, 1091

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 11990 and 12001. The biggest common factor number is the GCF number.
So the greatest common factor 11990 and 12001 is 11.

Also check out the Least Common Multiple of 11990 and 12001