What is the Greatest Common Factor of 2808 and 2821?

Greatest common factor (GCF) of 2808 and 2821 is 13.

GCF(2808,2821) = 13

We will now calculate the prime factors of 2808 and 2821, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2808 and 2821.

How to find the GCF of 2808 and 2821?

We will first find the prime factorization of 2808 and 2821. After we will calculate the factors of 2808 and 2821 and find the biggest common factor number .

Step-1: Prime Factorization of 2808

Prime factors of 2808 are 2, 3, 13. Prime factorization of 2808 in exponential form is:

2808 = 2³ × 3³ × 13¹

Step-2: Prime Factorization of 2821

Prime factors of 2821 are 7, 13, 31. Prime factorization of 2821 in exponential form is:

2821 = 7¹ × 13¹ × 31¹

Step-3: Factors of 2808

List of positive integer factors of 2808 that divides 2808 without a remainder.

1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 104, 108, 117, 156, 216, 234, 312, 351, 468, 702, 936, 1404

Step-4: Factors of 2821

List of positive integer factors of 2821 that divides 2808 without a remainder.

1, 7, 13, 31, 91, 217, 403

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2808 and 2821. The biggest common factor number is the GCF number.
So the greatest common factor 2808 and 2821 is 13.

Also check out the Least Common Multiple of 2808 and 2821