GCF for 80 and 115

What is the Greatest Common Factor of 80 and 115?

Answer: GCF of 80 and 115 is 5

(Five)

Finding GCF for 80 and 115 using all factors (divisors) listing

The first method to find GCF for numbers 80 and 115 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 115: 1, 5, 23, 115

So the Greatest Common Factor for 80 and 115 is 5

Finding GCF for 80 and 115 by Prime Factorization

The second method to find GCF for numbers 80 and 115 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 115: 5, 23

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 115

GCF Table

Number 1Number 2GCF
651155
661151
671151
681151
6911523
701155
711151
721151
731151
741151
751155
761151
771151
781151
791151
801155
811151
821151
831151
841151
851155
861151
871151
881151
891151
901155
911151
9211523
931151
941151

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 115? (The answer is: 5). Select the first number (e.g. '80') and the second number (e.g. '115'). 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 115?

GCF of 80 and 115 is 5