What is the Greatest Common Factor of 17885 and 17890?

Greatest common factor (GCF) of 17885 and 17890 is 5.

GCF(17885,17890) = 5

We will now calculate the prime factors of 17885 and 17890, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 17885 and 17890.

How to find the GCF of 17885 and 17890?

We will first find the prime factorization of 17885 and 17890. After we will calculate the factors of 17885 and 17890 and find the biggest common factor number .

Step-1: Prime Factorization of 17885

Prime factors of 17885 are 5, 7, 73. Prime factorization of 17885 in exponential form is:

17885 = 5¹ × 7² × 73¹

Step-2: Prime Factorization of 17890

Prime factors of 17890 are 2, 5, 1789. Prime factorization of 17890 in exponential form is:

17890 = 2¹ × 5¹ × 1789¹

Step-3: Factors of 17885

List of positive integer factors of 17885 that divides 17885 without a remainder.

1, 5, 7, 35, 49, 73, 245, 365, 511, 2555, 3577

Step-4: Factors of 17890

List of positive integer factors of 17890 that divides 17885 without a remainder.

1, 2, 5, 10, 1789, 3578, 8945

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 17885 and 17890. The biggest common factor number is the GCF number.
So the greatest common factor 17885 and 17890 is 5.

Also check out the Least Common Multiple of 17885 and 17890