GCF for 30 and 605

What is the Greatest Common Factor of 30 and 605?

Answer: GCF of 30 and 605 is 5

(Five)

Finding GCF for 30 and 605 using all factors (divisors) listing

The first method to find GCF for numbers 30 and 605 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 605: 1, 5, 11, 55, 121, 605

So the Greatest Common Factor for 30 and 605 is 5

Finding GCF for 30 and 605 by Prime Factorization

The second method to find GCF for numbers 30 and 605 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 605: 5, 11, 11

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 605

GCF Table

Number 1Number 2GCF
156055
166051
176051
186051
196051
206055
216051
2260511
236051
246051
256055
266051
276051
286051
296051
306055
316051
326051
3360511
346051
356055
366051
376051
386051
396051
406055
416051
426051
436051
4460511

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 605? (The answer is: 5). Select the first number (e.g. '30') and the second number (e.g. '605'). 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 605?

GCF of 30 and 605 is 5