What is the Greatest Common Factor of 19902 and 19911?

Greatest common factor (GCF) of 19902 and 19911 is 3.

GCF(19902,19911) = 3

We will now calculate the prime factors of 19902 and 19911, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19902 and 19911.

How to find the GCF of 19902 and 19911?

We will first find the prime factorization of 19902 and 19911. After we will calculate the factors of 19902 and 19911 and find the biggest common factor number .

Step-1: Prime Factorization of 19902

Prime factors of 19902 are 2, 3, 31, 107. Prime factorization of 19902 in exponential form is:

19902 = 2¹ × 3¹ × 31¹ × 107¹

Step-2: Prime Factorization of 19911

Prime factors of 19911 are 3, 6637. Prime factorization of 19911 in exponential form is:

19911 = 3¹ × 6637¹

Step-3: Factors of 19902

List of positive integer factors of 19902 that divides 19902 without a remainder.

1, 2, 3, 6, 31, 62, 93, 107, 186, 214, 321, 642, 3317, 6634, 9951

Step-4: Factors of 19911

List of positive integer factors of 19911 that divides 19902 without a remainder.

1, 3, 6637

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19902 and 19911. The biggest common factor number is the GCF number.
So the greatest common factor 19902 and 19911 is 3.

Also check out the Least Common Multiple of 19902 and 19911