What is the Greatest Common Factor of 20191 and 20197?

Greatest common factor (GCF) of 20191 and 20197 is 1.

GCF(20191,20197) = 1

We will now calculate the prime factors of 20191 and 20197, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20191 and 20197.

How to find the GCF of 20191 and 20197?

We will first find the prime factorization of 20191 and 20197. After we will calculate the factors of 20191 and 20197 and find the biggest common factor number .

Step-1: Prime Factorization of 20191

Prime factors of 20191 are 61, 331. Prime factorization of 20191 in exponential form is:

20191 = 61¹ × 331¹

Step-2: Prime Factorization of 20197

Prime factors of 20197 are 19, 1063. Prime factorization of 20197 in exponential form is:

20197 = 19¹ × 1063¹

Step-3: Factors of 20191

List of positive integer factors of 20191 that divides 20191 without a remainder.

1, 61, 331

Step-4: Factors of 20197

List of positive integer factors of 20197 that divides 20191 without a remainder.

1, 19, 1063

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20191 and 20197. The biggest common factor number is the GCF number.
So the greatest common factor 20191 and 20197 is 1.

Also check out the Least Common Multiple of 20191 and 20197