GCF for 70 and 505

What is the Greatest Common Factor of 70 and 505?

Answer: GCF of 70 and 505 is 5

(Five)

Finding GCF for 70 and 505 using all factors (divisors) listing

The first method to find GCF for numbers 70 and 505 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 505: 1, 5, 101, 505

So the Greatest Common Factor for 70 and 505 is 5

Finding GCF for 70 and 505 by Prime Factorization

The second method to find GCF for numbers 70 and 505 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 505: 5, 101

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 505

GCF Table

Number 1Number 2GCF
555055
565051
575051
585051
595051
605055
615051
625051
635051
645051
655055
665051
675051
685051
695051
705055
715051
725051
735051
745051
755055
765051
775051
785051
795051
805055
815051
825051
835051
845051

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 505? (The answer is: 5). Select the first number (e.g. '70') and the second number (e.g. '505'). 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 505?

GCF of 70 and 505 is 5