What is the Greatest Common Factor of 19903 and 19916?

Greatest common factor (GCF) of 19903 and 19916 is 13.

GCF(19903,19916) = 13

We will now calculate the prime factors of 19903 and 19916, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19903 and 19916.

How to find the GCF of 19903 and 19916?

We will first find the prime factorization of 19903 and 19916. After we will calculate the factors of 19903 and 19916 and find the biggest common factor number .

Step-1: Prime Factorization of 19903

Prime factors of 19903 are 13, 1531. Prime factorization of 19903 in exponential form is:

19903 = 13¹ × 1531¹

Step-2: Prime Factorization of 19916

Prime factors of 19916 are 2, 13, 383. Prime factorization of 19916 in exponential form is:

19916 = 2² × 13¹ × 383¹

Step-3: Factors of 19903

List of positive integer factors of 19903 that divides 19903 without a remainder.

1, 13, 1531

Step-4: Factors of 19916

List of positive integer factors of 19916 that divides 19903 without a remainder.

1, 2, 4, 13, 26, 52, 383, 766, 1532, 4979, 9958

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19903 and 19916. The biggest common factor number is the GCF number.
So the greatest common factor 19903 and 19916 is 13.

Also check out the Least Common Multiple of 19903 and 19916