GCF for 70 and 655

What is the Greatest Common Factor of 70 and 655?

Answer: GCF of 70 and 655 is 5

(Five)

Finding GCF for 70 and 655 using all factors (divisors) listing

The first method to find GCF for numbers 70 and 655 is to list all factors for both numbers and pick the highest common one:

All factors of 70: 1, 2, 5, 7, 10, 14, 35, 70

All factors of 655: 1, 5, 131, 655

So the Greatest Common Factor for 70 and 655 is 5

Finding GCF for 70 and 655 by Prime Factorization

The second method to find GCF for numbers 70 and 655 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 70: 2, 5, 7

All Prime Factors of 655: 5, 131

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 70 and 655

GCF Table

Number 1Number 2GCF
556555
566551
576551
586551
596551
606555
616551
626551
636551
646551
656555
666551
676551
686551
696551
706555
716551
726551
736551
746551
756555
766551
776551
786551
796551
806555
816551
826551
836551
846551

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 70 and 655? (The answer is: 5). Select the first number (e.g. '70') and the second number (e.g. '655'). 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 70 and 655?

GCF of 70 and 655 is 5