GCF for 30 and 695

What is the Greatest Common Factor of 30 and 695?

Answer: GCF of 30 and 695 is 5

(Five)

Finding GCF for 30 and 695 using all factors (divisors) listing

The first method to find GCF for numbers 30 and 695 is to list all factors for both numbers and pick the highest common one:

All factors of 30: 1, 2, 3, 5, 6, 10, 15, 30

All factors of 695: 1, 5, 139, 695

So the Greatest Common Factor for 30 and 695 is 5

Finding GCF for 30 and 695 by Prime Factorization

The second method to find GCF for numbers 30 and 695 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 30: 2, 3, 5

All Prime Factors of 695: 5, 139

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 30 and 695

GCF Table

Number 1Number 2GCF
156955
166951
176951
186951
196951
206955
216951
226951
236951
246951
256955
266951
276951
286951
296951
306955
316951
326951
336951
346951
356955
366951
376951
386951
396951
406955
416951
426951
436951
446951

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 30 and 695? (The answer is: 5). Select the first number (e.g. '30') and the second number (e.g. '695'). 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 30 and 695?

GCF of 30 and 695 is 5