GCF for 70 and 765

What is the Greatest Common Factor of 70 and 765?

Answer: GCF of 70 and 765 is 5

(Five)

Finding GCF for 70 and 765 using all factors (divisors) listing

The first method to find GCF for numbers 70 and 765 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 765: 1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765

So the Greatest Common Factor for 70 and 765 is 5

Finding GCF for 70 and 765 by Prime Factorization

The second method to find GCF for numbers 70 and 765 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 765: 3, 3, 5, 17

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 765

GCF Table

Number 1Number 2GCF
557655
567651
577653
587651
597651
6076515
617651
627651
637659
647651
657655
667653
677651
6876517
697653
707655
717651
727659
737651
747651
7576515
767651
777651
787653
797651
807655
817659
827651
837651
847653

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 765? (The answer is: 5). Select the first number (e.g. '70') and the second number (e.g. '765'). 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 765?

GCF of 70 and 765 is 5