What is the Greatest Common Factor of 2821 and 2828?

Greatest common factor (GCF) of 2821 and 2828 is 7.

GCF(2821,2828) = 7

We will now calculate the prime factors of 2821 and 2828, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2821 and 2828.

How to find the GCF of 2821 and 2828?

We will first find the prime factorization of 2821 and 2828. After we will calculate the factors of 2821 and 2828 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 2828

Prime factors of 2828 are 2, 7, 101. Prime factorization of 2828 in exponential form is:

2828 = 2² × 7¹ × 101¹

Step-3: Factors of 2821

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

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

Step-4: Factors of 2828

List of positive integer factors of 2828 that divides 2821 without a remainder.

1, 2, 4, 7, 14, 28, 101, 202, 404, 707, 1414

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2821 and 2828. The biggest common factor number is the GCF number.
So the greatest common factor 2821 and 2828 is 7.

Also check out the Least Common Multiple of 2821 and 2828