GCF for 80 and 205

What is the Greatest Common Factor of 80 and 205?

Answer: GCF of 80 and 205 is 5

(Five)

Finding GCF for 80 and 205 using all factors (divisors) listing

The first method to find GCF for numbers 80 and 205 is to list all factors for both numbers and pick the highest common one:

All factors of 80: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

All factors of 205: 1, 5, 41, 205

So the Greatest Common Factor for 80 and 205 is 5

Finding GCF for 80 and 205 by Prime Factorization

The second method to find GCF for numbers 80 and 205 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 80: 2, 2, 2, 2, 5

All Prime Factors of 205: 5, 41

As we can see there is only one Prime Factor common to both numbers. It is 5

So 5 is the Greatest Common Factor of 80 and 205

GCF Table

Number 1Number 2GCF
652055
662051
672051
682051
692051
702055
712051
722051
732051
742051
752055
762051
772051
782051
792051
802055
812051
8220541
832051
842051
852055
862051
872051
882051
892051
902055
912051
922051
932051
942051

About "Greatest Common Factor" Calculator

This calculator will help you find the greatest common factor (GCF) of two numbers. For example, it can help you find out what is the Greatest Common Factor of 80 and 205? (The answer is: 5). Select the first number (e.g. '80') and the second number (e.g. '205'). After that hit the 'Calculate' button.
Greatest Common Factor (GCF) also known as the Greatest Common Divisor (GCD) or Highest Common Factor (HCF) - it is the largest positive integer that divides each of the integers with zero remainder

FAQ

What is the Greatest Common Factor of 80 and 205?

GCF of 80 and 205 is 5