What is the Greatest Common Factor of 7821 and 7831?

Greatest common factor (GCF) of 7821 and 7831 is 1.

GCF(7821,7831) = 1

We will now calculate the prime factors of 7821 and 7831, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7821 and 7831.

How to find the GCF of 7821 and 7831?

We will first find the prime factorization of 7821 and 7831. After we will calculate the factors of 7821 and 7831 and find the biggest common factor number .

Step-1: Prime Factorization of 7821

Prime factors of 7821 are 3, 11, 79. Prime factorization of 7821 in exponential form is:

7821 = 3² × 11¹ × 79¹

Step-2: Prime Factorization of 7831

Prime factors of 7831 are 41, 191. Prime factorization of 7831 in exponential form is:

7831 = 41¹ × 191¹

Step-3: Factors of 7821

List of positive integer factors of 7821 that divides 7821 without a remainder.

1, 3, 9, 11, 33, 79, 99, 237, 711, 869, 2607

Step-4: Factors of 7831

List of positive integer factors of 7831 that divides 7821 without a remainder.

1, 41, 191

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7821 and 7831. The biggest common factor number is the GCF number.
So the greatest common factor 7821 and 7831 is 1.

Also check out the Least Common Multiple of 7821 and 7831