What is the Greatest Common Factor of 19931 and 19940?

Greatest common factor (GCF) of 19931 and 19940 is 1.

GCF(19931,19940) = 1

We will now calculate the prime factors of 19931 and 19940, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19931 and 19940.

How to find the GCF of 19931 and 19940?

We will first find the prime factorization of 19931 and 19940. After we will calculate the factors of 19931 and 19940 and find the biggest common factor number .

Step-1: Prime Factorization of 19931

Prime factors of 19931 are 19, 1049. Prime factorization of 19931 in exponential form is:

19931 = 19¹ × 1049¹

Step-2: Prime Factorization of 19940

Prime factors of 19940 are 2, 5, 997. Prime factorization of 19940 in exponential form is:

19940 = 2² × 5¹ × 997¹

Step-3: Factors of 19931

List of positive integer factors of 19931 that divides 19931 without a remainder.

1, 19, 1049

Step-4: Factors of 19940

List of positive integer factors of 19940 that divides 19931 without a remainder.

1, 2, 4, 5, 10, 20, 997, 1994, 3988, 4985, 9970

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19931 and 19940. The biggest common factor number is the GCF number.
So the greatest common factor 19931 and 19940 is 1.

Also check out the Least Common Multiple of 19931 and 19940