What is the Greatest Common Factor of 20172 and 20182?

Greatest common factor (GCF) of 20172 and 20182 is 2.

GCF(20172,20182) = 2

We will now calculate the prime factors of 20172 and 20182, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20172 and 20182.

How to find the GCF of 20172 and 20182?

We will first find the prime factorization of 20172 and 20182. After we will calculate the factors of 20172 and 20182 and find the biggest common factor number .

Step-1: Prime Factorization of 20172

Prime factors of 20172 are 2, 3, 41. Prime factorization of 20172 in exponential form is:

20172 = 2² × 3¹ × 41²

Step-2: Prime Factorization of 20182

Prime factors of 20182 are 2, 10091. Prime factorization of 20182 in exponential form is:

20182 = 2¹ × 10091¹

Step-3: Factors of 20172

List of positive integer factors of 20172 that divides 20172 without a remainder.

1, 2, 3, 4, 6, 12, 41, 82, 123, 164, 246, 492, 1681, 3362, 5043, 6724, 10086

Step-4: Factors of 20182

List of positive integer factors of 20182 that divides 20172 without a remainder.

1, 2, 10091

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20172 and 20182. The biggest common factor number is the GCF number.
So the greatest common factor 20172 and 20182 is 2.

Also check out the Least Common Multiple of 20172 and 20182