GCF for 40 and 65

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest common Divisor of 40 and 65?

Answer: GCF of 40 and 65 is 5

(Five)

Finding GCF for 40 and 65 using all factors (divisors) listing

The first method to find GCF for numbers 40 and 65 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 65: 1, 5, 13, 65

So the Greatest Common Factor for 40 and 65 is 5

Finding GCF for 40 and 65 by Prime Factorization

The second method to find GCF for numbers 40 and 65 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 65: 5, 13

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 65

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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 Divisor of 40 and 65? (The answer is: 5). Select the first number (e.g. '40') and the second number (e.g. '65'). 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

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

GCF Table

Number 1Number 2GCF
25655
266513
27651
28651
29651
30655
31651
32651
33651
34651
35655
36651
37651
38651
396513
40655
41651
42651
43651
44651
45655
46651
47651
48651
49651
50655
51651
526513
53651
54651

FAQ

What is the Greatest common Divisor of 40 and 65?

GCF of 40 and 65 is 5

See Also