What is the Greatest Common Factor of 99855 and 99865?

Greatest common factor (GCF) of 99855 and 99865 is 5.

GCF(99855,99865) = 5

We will now calculate the prime factors of 99855 and 99865, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 99855 and 99865.

How to find the GCF of 99855 and 99865?

We will first find the prime factorization of 99855 and 99865. After we will calculate the factors of 99855 and 99865 and find the biggest common factor number .

Step-1: Prime Factorization of 99855

Prime factors of 99855 are 3, 5, 7, 317. Prime factorization of 99855 in exponential form is:

99855 = 3² × 5¹ × 7¹ × 317¹

Step-2: Prime Factorization of 99865

Prime factors of 99865 are 5, 19973. Prime factorization of 99865 in exponential form is:

99865 = 5¹ × 19973¹

Step-3: Factors of 99855

List of positive integer factors of 99855 that divides 99855 without a remainder.

1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 317, 951, 1585, 2219, 2853, 4755, 6657, 11095, 14265, 19971, 33285

Step-4: Factors of 99865

List of positive integer factors of 99865 that divides 99855 without a remainder.

1, 5, 19973

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 99855 and 99865. The biggest common factor number is the GCF number.
So the greatest common factor 99855 and 99865 is 5.

Also check out the Least Common Multiple of 99855 and 99865