What is the Greatest Common Factor of 17840 and 17855?

Greatest common factor (GCF) of 17840 and 17855 is 5.

GCF(17840,17855) = 5

We will now calculate the prime factors of 17840 and 17855, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 17840 and 17855.

How to find the GCF of 17840 and 17855?

We will first find the prime factorization of 17840 and 17855. After we will calculate the factors of 17840 and 17855 and find the biggest common factor number .

Step-1: Prime Factorization of 17840

Prime factors of 17840 are 2, 5, 223. Prime factorization of 17840 in exponential form is:

17840 = 2⁴ × 5¹ × 223¹

Step-2: Prime Factorization of 17855

Prime factors of 17855 are 5, 3571. Prime factorization of 17855 in exponential form is:

17855 = 5¹ × 3571¹

Step-3: Factors of 17840

List of positive integer factors of 17840 that divides 17840 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1784, 2230, 3568, 4460, 8920

Step-4: Factors of 17855

List of positive integer factors of 17855 that divides 17840 without a remainder.

1, 5, 3571

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 17840 and 17855. The biggest common factor number is the GCF number.
So the greatest common factor 17840 and 17855 is 5.

Also check out the Least Common Multiple of 17840 and 17855