What is the Greatest Common Factor of 20145 and 20163?

Greatest common factor (GCF) of 20145 and 20163 is 3.

GCF(20145,20163) = 3

We will now calculate the prime factors of 20145 and 20163, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20145 and 20163.

How to find the GCF of 20145 and 20163?

We will first find the prime factorization of 20145 and 20163. After we will calculate the factors of 20145 and 20163 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 20163

Prime factors of 20163 are 3, 11, 13, 47. Prime factorization of 20163 in exponential form is:

20163 = 3¹ × 11¹ × 13¹ × 47¹

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 20163

List of positive integer factors of 20163 that divides 20145 without a remainder.

1, 3, 11, 13, 33, 39, 47, 141, 143, 429, 517, 611, 1551, 1833, 6721

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20145 and 20163. The biggest common factor number is the GCF number.
So the greatest common factor 20145 and 20163 is 3.

Also check out the Least Common Multiple of 20145 and 20163