What is the Greatest Common Factor of 2391 and 2403?

Greatest common factor (GCF) of 2391 and 2403 is 3.

GCF(2391,2403) = 3

We will now calculate the prime factors of 2391 and 2403, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2391 and 2403.

How to find the GCF of 2391 and 2403?

We will first find the prime factorization of 2391 and 2403. After we will calculate the factors of 2391 and 2403 and find the biggest common factor number .

Step-1: Prime Factorization of 2391

Prime factors of 2391 are 3, 797. Prime factorization of 2391 in exponential form is:

2391 = 3¹ × 797¹

Step-2: Prime Factorization of 2403

Prime factors of 2403 are 3, 89. Prime factorization of 2403 in exponential form is:

2403 = 3³ × 89¹

Step-3: Factors of 2391

List of positive integer factors of 2391 that divides 2391 without a remainder.

1, 3, 797

Step-4: Factors of 2403

List of positive integer factors of 2403 that divides 2391 without a remainder.

1, 3, 9, 27, 89, 267, 801

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2391 and 2403. The biggest common factor number is the GCF number.
So the greatest common factor 2391 and 2403 is 3.

Also check out the Least Common Multiple of 2391 and 2403