What is the Greatest Common Factor of 30805 and 30810?

Greatest common factor (GCF) of 30805 and 30810 is 5.

GCF(30805,30810) = 5

We will now calculate the prime factors of 30805 and 30810, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30805 and 30810.

How to find the GCF of 30805 and 30810?

We will first find the prime factorization of 30805 and 30810. After we will calculate the factors of 30805 and 30810 and find the biggest common factor number .

Step-1: Prime Factorization of 30805

Prime factors of 30805 are 5, 61, 101. Prime factorization of 30805 in exponential form is:

30805 = 5¹ × 61¹ × 101¹

Step-2: Prime Factorization of 30810

Prime factors of 30810 are 2, 3, 5, 13, 79. Prime factorization of 30810 in exponential form is:

30810 = 2¹ × 3¹ × 5¹ × 13¹ × 79¹

Step-3: Factors of 30805

List of positive integer factors of 30805 that divides 30805 without a remainder.

1, 5, 61, 101, 305, 505, 6161

Step-4: Factors of 30810

List of positive integer factors of 30810 that divides 30805 without a remainder.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 79, 130, 158, 195, 237, 390, 395, 474, 790, 1027, 1185, 2054, 2370, 3081, 5135, 6162, 10270, 15405

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30805 and 30810. The biggest common factor number is the GCF number.
So the greatest common factor 30805 and 30810 is 5.

Also check out the Least Common Multiple of 30805 and 30810