GCF for 51 and 85

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest common Divisor of 51 and 85?

Answer: GCF of 51 and 85 is 17

(Seventeen)

Finding GCF for 51 and 85 using all factors (divisors) listing

The first method to find GCF for numbers 51 and 85 is to list all factors for both numbers and pick the highest common one:

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

All factors of 85: 1, 5, 17, 85

So the Greatest Common Factor for 51 and 85 is 17

Finding GCF for 51 and 85 by Prime Factorization

The second method to find GCF for numbers 51 and 85 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 51: 3, 17

All Prime Factors of 85: 5, 17

As we can see there is only one Prime Factor common to both numbers. It is 17

So 17 is the Greatest Common Factor of 51 and 85

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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 51 and 85? (The answer is: 17). Select the first number (e.g. '51') and the second number (e.g. '85'). 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
36851
37851
38851
39851
40855
41851
42851
43851
44851
45855
46851
47851
48851
49851
50855
518517
52851
53851
54851
55855
56851
57851
58851
59851
60855
61851
62851
63851
64851
65855

FAQ

What is the Greatest common Divisor of 51 and 85?

GCF of 51 and 85 is 17

See Also