What is the Greatest Common Factor of 85895 and 85905?

Greatest common factor (GCF) of 85895 and 85905 is 5.

GCF(85895,85905) = 5

We will now calculate the prime factors of 85895 and 85905, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 85895 and 85905.

How to find the GCF of 85895 and 85905?

We will first find the prime factorization of 85895 and 85905. After we will calculate the factors of 85895 and 85905 and find the biggest common factor number .

Step-1: Prime Factorization of 85895

Prime factors of 85895 are 5, 41, 419. Prime factorization of 85895 in exponential form is:

85895 = 5¹ × 41¹ × 419¹

Step-2: Prime Factorization of 85905

Prime factors of 85905 are 3, 5, 23, 83. Prime factorization of 85905 in exponential form is:

85905 = 3² × 5¹ × 23¹ × 83¹

Step-3: Factors of 85895

List of positive integer factors of 85895 that divides 85895 without a remainder.

1, 5, 41, 205, 419, 2095, 17179

Step-4: Factors of 85905

List of positive integer factors of 85905 that divides 85895 without a remainder.

1, 3, 5, 9, 15, 23, 45, 69, 83, 115, 207, 249, 345, 415, 747, 1035, 1245, 1909, 3735, 5727, 9545, 17181, 28635

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 85895 and 85905. The biggest common factor number is the GCF number.
So the greatest common factor 85895 and 85905 is 5.

Also check out the Least Common Multiple of 85895 and 85905