What is the Greatest Common Factor of 30807 and 30821?

Greatest common factor (GCF) of 30807 and 30821 is 7.

GCF(30807,30821) = 7

We will now calculate the prime factors of 30807 and 30821, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30807 and 30821.

How to find the GCF of 30807 and 30821?

We will first find the prime factorization of 30807 and 30821. After we will calculate the factors of 30807 and 30821 and find the biggest common factor number .

Step-1: Prime Factorization of 30807

Prime factors of 30807 are 3, 7, 163. Prime factorization of 30807 in exponential form is:

30807 = 3³ × 7¹ × 163¹

Step-2: 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-3: Factors of 30807

List of positive integer factors of 30807 that divides 30807 without a remainder.

1, 3, 7, 9, 21, 27, 63, 163, 189, 489, 1141, 1467, 3423, 4401, 10269

Step-4: Factors of 30821

List of positive integer factors of 30821 that divides 30807 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30807 and 30821. The biggest common factor number is the GCF number.
So the greatest common factor 30807 and 30821 is 7.

Also check out the Least Common Multiple of 30807 and 30821