GCF for 68 and 85

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest common Divisor of 68 and 85?

Answer: GCF of 68 and 85 is 17

(Seventeen)

Finding GCF for 68 and 85 using all factors (divisors) listing

The first method to find GCF for numbers 68 and 85 is to list all factors for both numbers and pick the highest common one:

All factors of 68: 1, 2, 4, 17, 34, 68

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

So the Greatest Common Factor for 68 and 85 is 17

Finding GCF for 68 and 85 by Prime Factorization

The second method to find GCF for numbers 68 and 85 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 68: 2, 2, 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 68 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 68 and 85? (The answer is: 17). Select the first number (e.g. '68') 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
53851
54851
55855
56851
57851
58851
59851
60855
61851
62851
63851
64851
65855
66851
67851
688517
69851
70855
71851
72851
73851
74851
75855
76851
77851
78851
79851
80855
81851
82851

FAQ

What is the Greatest common Divisor of 68 and 85?

GCF of 68 and 85 is 17

See Also