GCF for 40 and 705

What is the Greatest Common Factor of 40 and 705?

Answer: GCF of 40 and 705 is 5

(Five)

Finding GCF for 40 and 705 using all factors (divisors) listing

The first method to find GCF for numbers 40 and 705 is to list all factors for both numbers and pick the highest common one:

All factors of 40: 1, 2, 4, 5, 8, 10, 20, 40

All factors of 705: 1, 3, 5, 15, 47, 141, 235, 705

So the Greatest Common Factor for 40 and 705 is 5

Finding GCF for 40 and 705 by Prime Factorization

The second method to find GCF for numbers 40 and 705 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 40: 2, 2, 2, 5

All Prime Factors of 705: 3, 5, 47

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 40 and 705

GCF Table

Number 1Number 2GCF
257055
267051
277053
287051
297051
3070515
317051
327051
337053
347051
357055
367053
377051
387051
397053
407055
417051
427053
437051
447051
4570515
467051
4770547
487053
497051
507055
517053
527051
537051
547053

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 40 and 705? (The answer is: 5). Select the first number (e.g. '40') and the second number (e.g. '705'). 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 40 and 705?

GCF of 40 and 705 is 5