GCF for 80 and 515

What is the Greatest Common Factor of 80 and 515?

Answer: GCF of 80 and 515 is 5

(Five)

Finding GCF for 80 and 515 using all factors (divisors) listing

The first method to find GCF for numbers 80 and 515 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 515: 1, 5, 103, 515

So the Greatest Common Factor for 80 and 515 is 5

Finding GCF for 80 and 515 by Prime Factorization

The second method to find GCF for numbers 80 and 515 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 515: 5, 103

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 515

GCF Table

Number 1Number 2GCF
655155
665151
675151
685151
695151
705155
715151
725151
735151
745151
755155
765151
775151
785151
795151
805155
815151
825151
835151
845151
855155
865151
875151
885151
895151
905155
915151
925151
935151
945151

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 515? (The answer is: 5). Select the first number (e.g. '80') and the second number (e.g. '515'). 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 515?

GCF of 80 and 515 is 5