GCF for 77 and 91

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest common Divisor of 77 and 91?

Answer: GCF of 77 and 91 is 7

(Seven)

Finding GCF for 77 and 91 using all factors (divisors) listing

The first method to find GCF for numbers 77 and 91 is to list all factors for both numbers and pick the highest common one:

All factors of 77: 1, 7, 11, 77

All factors of 91: 1, 7, 13, 91

So the Greatest Common Factor for 77 and 91 is 7

Finding GCF for 77 and 91 by Prime Factorization

The second method to find GCF for numbers 77 and 91 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 77: 7, 11

All Prime Factors of 91: 7, 13

As we can see there is only one Prime Factor common to both numbers. It is 7

So 7 is the Greatest Common Factor of 77 and 91

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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 77 and 91? (The answer is: 7). Select the first number (e.g. '77') and the second number (e.g. '91'). 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
62911
63917
64911
659113
66911
67911
68911
69911
70917
71911
72911
73911
74911
75911
76911
77917
789113
79911
80911
81911
82911
83911
84917
85911
86911
87911
88911
89911
90911
919191

FAQ

What is the Greatest common Divisor of 77 and 91?

GCF of 77 and 91 is 7

See Also