What is the Greatest Common Factor of 20145 and 20161?

Greatest common factor (GCF) of 20145 and 20161 is 1.

GCF(20145,20161) = 1

We will now calculate the prime factors of 20145 and 20161, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20145 and 20161.

How to find the GCF of 20145 and 20161?

We will first find the prime factorization of 20145 and 20161. After we will calculate the factors of 20145 and 20161 and find the biggest common factor number .

Step-1: Prime Factorization of 20145

Prime factors of 20145 are 3, 5, 17, 79. Prime factorization of 20145 in exponential form is:

20145 = 3¹ × 5¹ × 17¹ × 79¹

Step-2: Prime Factorization of 20161

Prime factors of 20161 are 20161. Prime factorization of 20161 in exponential form is:

20161 = 20161¹

Step-3: Factors of 20145

List of positive integer factors of 20145 that divides 20145 without a remainder.

1, 3, 5, 15, 17, 51, 79, 85, 237, 255, 395, 1185, 1343, 4029, 6715

Step-4: Factors of 20161

List of positive integer factors of 20161 that divides 20145 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20145 and 20161. The biggest common factor number is the GCF number.
So the greatest common factor 20145 and 20161 is 1.

Also check out the Least Common Multiple of 20145 and 20161