What is the Greatest Common Factor of 30821 and 30831?

Greatest common factor (GCF) of 30821 and 30831 is 1.

GCF(30821,30831) = 1

We will now calculate the prime factors of 30821 and 30831, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30821 and 30831.

How to find the GCF of 30821 and 30831?

We will first find the prime factorization of 30821 and 30831. After we will calculate the factors of 30821 and 30831 and find the biggest common factor number .

Step-1: Prime Factorization of 30821

Prime factors of 30821 are 7, 17, 37. Prime factorization of 30821 in exponential form is:

30821 = 7² × 17¹ × 37¹

Step-2: Prime Factorization of 30831

Prime factors of 30831 are 3, 43, 239. Prime factorization of 30831 in exponential form is:

30831 = 3¹ × 43¹ × 239¹

Step-3: Factors of 30821

List of positive integer factors of 30821 that divides 30821 without a remainder.

1, 7, 17, 37, 49, 119, 259, 629, 833, 1813, 4403

Step-4: Factors of 30831

List of positive integer factors of 30831 that divides 30821 without a remainder.

1, 3, 43, 129, 239, 717, 10277

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30821 and 30831. The biggest common factor number is the GCF number.
So the greatest common factor 30821 and 30831 is 1.

Also check out the Least Common Multiple of 30821 and 30831