GCF for 80 and 305

What is the Greatest Common Factor of 80 and 305?

Answer: GCF of 80 and 305 is 5

(Five)

Finding GCF for 80 and 305 using all factors (divisors) listing

The first method to find GCF for numbers 80 and 305 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 305: 1, 5, 61, 305

So the Greatest Common Factor for 80 and 305 is 5

Finding GCF for 80 and 305 by Prime Factorization

The second method to find GCF for numbers 80 and 305 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 305: 5, 61

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 305

GCF Table

Number 1Number 2GCF
653055
663051
673051
683051
693051
703055
713051
723051
733051
743051
753055
763051
773051
783051
793051
803055
813051
823051
833051
843051
853055
863051
873051
883051
893051
903055
913051
923051
933051
943051

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 305? (The answer is: 5). Select the first number (e.g. '80') and the second number (e.g. '305'). 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 305?

GCF of 80 and 305 is 5