What is the Greatest Common Factor of 9805 and 9815?

Greatest common factor (GCF) of 9805 and 9815 is 5.

GCF(9805,9815) = 5

We will now calculate the prime factors of 9805 and 9815, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 9805 and 9815.

How to find the GCF of 9805 and 9815?

We will first find the prime factorization of 9805 and 9815. After we will calculate the factors of 9805 and 9815 and find the biggest common factor number .

Step-1: Prime Factorization of 9805

Prime factors of 9805 are 5, 37, 53. Prime factorization of 9805 in exponential form is:

9805 = 5¹ × 37¹ × 53¹

Step-2: Prime Factorization of 9815

Prime factors of 9815 are 5, 13, 151. Prime factorization of 9815 in exponential form is:

9815 = 5¹ × 13¹ × 151¹

Step-3: Factors of 9805

List of positive integer factors of 9805 that divides 9805 without a remainder.

1, 5, 37, 53, 185, 265, 1961

Step-4: Factors of 9815

List of positive integer factors of 9815 that divides 9805 without a remainder.

1, 5, 13, 65, 151, 755, 1963

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 9805 and 9815. The biggest common factor number is the GCF number.
So the greatest common factor 9805 and 9815 is 5.

Also check out the Least Common Multiple of 9805 and 9815