What is the Greatest Common Factor of 2391 and 2397?

Greatest common factor (GCF) of 2391 and 2397 is 3.

GCF(2391,2397) = 3

We will now calculate the prime factors of 2391 and 2397, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2391 and 2397.

How to find the GCF of 2391 and 2397?

We will first find the prime factorization of 2391 and 2397. After we will calculate the factors of 2391 and 2397 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 2397

Prime factors of 2397 are 3, 17, 47. Prime factorization of 2397 in exponential form is:

2397 = 3¹ × 17¹ × 47¹

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 2397

List of positive integer factors of 2397 that divides 2391 without a remainder.

1, 3, 17, 47, 51, 141, 799

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2391 and 2397. The biggest common factor number is the GCF number.
So the greatest common factor 2391 and 2397 is 3.

Also check out the Least Common Multiple of 2391 and 2397