What is the Greatest Common Factor of 2815 and 2821?

Greatest common factor (GCF) of 2815 and 2821 is 1.

GCF(2815,2821) = 1

We will now calculate the prime factors of 2815 and 2821, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2815 and 2821.

How to find the GCF of 2815 and 2821?

We will first find the prime factorization of 2815 and 2821. After we will calculate the factors of 2815 and 2821 and find the biggest common factor number .

Step-1: Prime Factorization of 2815

Prime factors of 2815 are 5, 563. Prime factorization of 2815 in exponential form is:

2815 = 5¹ × 563¹

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 2815

List of positive integer factors of 2815 that divides 2815 without a remainder.

1, 5, 563

Step-4: Factors of 2821

List of positive integer factors of 2821 that divides 2815 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2815 and 2821. The biggest common factor number is the GCF number.
So the greatest common factor 2815 and 2821 is 1.

Also check out the Least Common Multiple of 2815 and 2821