What is the Greatest Common Factor of 19899 and 19910?

Greatest common factor (GCF) of 19899 and 19910 is 11.

GCF(19899,19910) = 11

We will now calculate the prime factors of 19899 and 19910, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19899 and 19910.

How to find the GCF of 19899 and 19910?

We will first find the prime factorization of 19899 and 19910. After we will calculate the factors of 19899 and 19910 and find the biggest common factor number .

Step-1: Prime Factorization of 19899

Prime factors of 19899 are 3, 11, 67. Prime factorization of 19899 in exponential form is:

19899 = 3³ × 11¹ × 67¹

Step-2: Prime Factorization of 19910

Prime factors of 19910 are 2, 5, 11, 181. Prime factorization of 19910 in exponential form is:

19910 = 2¹ × 5¹ × 11¹ × 181¹

Step-3: Factors of 19899

List of positive integer factors of 19899 that divides 19899 without a remainder.

1, 3, 9, 11, 27, 33, 67, 99, 201, 297, 603, 737, 1809, 2211, 6633

Step-4: Factors of 19910

List of positive integer factors of 19910 that divides 19899 without a remainder.

1, 2, 5, 10, 11, 22, 55, 110, 181, 362, 905, 1810, 1991, 3982, 9955

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19899 and 19910. The biggest common factor number is the GCF number.
So the greatest common factor 19899 and 19910 is 11.

Also check out the Least Common Multiple of 19899 and 19910