GCF for 80 and 545

What is the Greatest Common Factor of 80 and 545?

Answer: GCF of 80 and 545 is 5

(Five)

Finding GCF for 80 and 545 using all factors (divisors) listing

The first method to find GCF for numbers 80 and 545 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 545: 1, 5, 109, 545

So the Greatest Common Factor for 80 and 545 is 5

Finding GCF for 80 and 545 by Prime Factorization

The second method to find GCF for numbers 80 and 545 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 545: 5, 109

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 545

GCF Table

Number 1Number 2GCF
655455
665451
675451
685451
695451
705455
715451
725451
735451
745451
755455
765451
775451
785451
795451
805455
815451
825451
835451
845451
855455
865451
875451
885451
895451
905455
915451
925451
935451
945451

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 545? (The answer is: 5). Select the first number (e.g. '80') and the second number (e.g. '545'). 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 545?

GCF of 80 and 545 is 5