GCF for 45 and 51

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest common Divisor of 45 and 51?

Answer: GCF of 45 and 51 is 3

(Three)

Finding GCF for 45 and 51 using all factors (divisors) listing

The first method to find GCF for numbers 45 and 51 is to list all factors for both numbers and pick the highest common one:

All factors of 45: 1, 3, 5, 9, 15, 45

All factors of 51: 1, 3, 17, 51

So the Greatest Common Factor for 45 and 51 is 3

Finding GCF for 45 and 51 by Prime Factorization

The second method to find GCF for numbers 45 and 51 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 45: 3, 3, 5

All Prime Factors of 51: 3, 17

As we can see there is only one Prime Factor common to both numbers. It is 3

So 3 is the Greatest Common Factor of 45 and 51

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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 45 and 51? (The answer is: 3). Select the first number (e.g. '45') and the second number (e.g. '51'). 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
30513
31511
32511
33513
345117
35511
36513
37511
38511
39513
40511
41511
42513
43511
44511
45513
46511
47511
48513
49511
50511
515151
52511
53511
54513
55511
56511
57513
58511
59511

FAQ

What is the Greatest common Divisor of 45 and 51?

GCF of 45 and 51 is 3

See Also