What is the Greatest Common Factor of 16851 and 16863?

Greatest common factor (GCF) of 16851 and 16863 is 3.

GCF(16851,16863) = 3

We will now calculate the prime factors of 16851 and 16863, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 16851 and 16863.

How to find the GCF of 16851 and 16863?

We will first find the prime factorization of 16851 and 16863. After we will calculate the factors of 16851 and 16863 and find the biggest common factor number .

Step-1: Prime Factorization of 16851

Prime factors of 16851 are 3, 41, 137. Prime factorization of 16851 in exponential form is:

16851 = 3¹ × 41¹ × 137¹

Step-2: Prime Factorization of 16863

Prime factors of 16863 are 3, 7, 11, 73. Prime factorization of 16863 in exponential form is:

16863 = 3¹ × 7¹ × 11¹ × 73¹

Step-3: Factors of 16851

List of positive integer factors of 16851 that divides 16851 without a remainder.

1, 3, 41, 123, 137, 411, 5617

Step-4: Factors of 16863

List of positive integer factors of 16863 that divides 16851 without a remainder.

1, 3, 7, 11, 21, 33, 73, 77, 219, 231, 511, 803, 1533, 2409, 5621

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 16851 and 16863. The biggest common factor number is the GCF number.
So the greatest common factor 16851 and 16863 is 3.

Also check out the Least Common Multiple of 16851 and 16863