What is the Greatest Common Factor of 19885 and 19904?

Greatest common factor (GCF) of 19885 and 19904 is 1.

GCF(19885,19904) = 1

We will now calculate the prime factors of 19885 and 19904, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19885 and 19904.

How to find the GCF of 19885 and 19904?

We will first find the prime factorization of 19885 and 19904. After we will calculate the factors of 19885 and 19904 and find the biggest common factor number .

Step-1: Prime Factorization of 19885

Prime factors of 19885 are 5, 41, 97. Prime factorization of 19885 in exponential form is:

19885 = 5¹ × 41¹ × 97¹

Step-2: Prime Factorization of 19904

Prime factors of 19904 are 2, 311. Prime factorization of 19904 in exponential form is:

19904 = 2⁶ × 311¹

Step-3: Factors of 19885

List of positive integer factors of 19885 that divides 19885 without a remainder.

1, 5, 41, 97, 205, 485, 3977

Step-4: Factors of 19904

List of positive integer factors of 19904 that divides 19885 without a remainder.

1, 2, 4, 8, 16, 32, 64, 311, 622, 1244, 2488, 4976, 9952

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19885 and 19904. The biggest common factor number is the GCF number.
So the greatest common factor 19885 and 19904 is 1.

Also check out the Least Common Multiple of 19885 and 19904