GCF for 7 and 77

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest common Divisor of 7 and 77?

Answer: GCF of 7 and 77 is 7

(Seven)

Finding GCF for 7 and 77 using all factors (divisors) listing

The first method to find GCF for numbers 7 and 77 is to list all factors for both numbers and pick the highest common one:

All factors of 7: 1, 7

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

So the Greatest Common Factor for 7 and 77 is 7

Finding GCF for 7 and 77 by Prime Factorization

The second method to find GCF for numbers 7 and 77 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 7: 7

All Prime Factors of 77: 7, 11

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 7 and 77

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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 7 and 77? (The answer is: 7). Select the first number (e.g. '7') and the second number (e.g. '77'). 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
1771
2771
3771
4771
5771
6771
7777
8771
9771
10771
117711
12771
13771
14777
15771
16771
17771
18771
19771
20771
21777
227711
23771
24771
25771
26771
27771
28777
29771
30771

FAQ

What is the Greatest common Divisor of 7 and 77?

GCF of 7 and 77 is 7

See Also