What is the Greatest Common Factor of 4085 and 4090?

Greatest common factor (GCF) of 4085 and 4090 is 5.

GCF(4085,4090) = 5

We will now calculate the prime factors of 4085 and 4090, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 4085 and 4090.

How to find the GCF of 4085 and 4090?

We will first find the prime factorization of 4085 and 4090. After we will calculate the factors of 4085 and 4090 and find the biggest common factor number .

Step-1: Prime Factorization of 4085

Prime factors of 4085 are 5, 19, 43. Prime factorization of 4085 in exponential form is:

4085 = 5¹ × 19¹ × 43¹

Step-2: Prime Factorization of 4090

Prime factors of 4090 are 2, 5, 409. Prime factorization of 4090 in exponential form is:

4090 = 2¹ × 5¹ × 409¹

Step-3: Factors of 4085

List of positive integer factors of 4085 that divides 4085 without a remainder.

1, 5, 19, 43, 95, 215, 817

Step-4: Factors of 4090

List of positive integer factors of 4090 that divides 4085 without a remainder.

1, 2, 5, 10, 409, 818, 2045

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 4085 and 4090. The biggest common factor number is the GCF number.
So the greatest common factor 4085 and 4090 is 5.

Also check out the Least Common Multiple of 4085 and 4090