GCF for 43 and 86

What is the Greatest common Divisor of 43 and 86?

Answer: GCF of 43 and 86 is 43

(Forty-three)

Finding GCF for 43 and 86 using all factors (divisors) listing

The first method to find GCF for numbers 43 and 86 is to list all factors for both numbers and pick the highest common one:

All factors of 43: 1, 43

All factors of 86: 1, 2, 43, 86

So the Greatest Common Factor for 43 and 86 is 43

Finding GCF for 43 and 86 by Prime Factorization

The second method to find GCF for numbers 43 and 86 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 43: 43

All Prime Factors of 86: 2, 43

As we can see there is only one Prime Factor common to both numbers. It is 43

So 43 is the Greatest Common Factor of 43 and 86

See Also

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 43 and 86? (The answer is: 43). Select the first number (e.g. '43') and the second number (e.g. '86'). 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

GCF Table

Number 1Number 2GCF
28862
29861
30862
31861
32862
33861
34862
35861
36862
37861
38862
39861
40862
41861
42862
4386
44862
45861
46862
47861
48862
49861
50862
51861
52862
5386
54862
55861
56862
57861

FAQ

What is the Greatest common Divisor of 43 and 86?

GCF of 43 and 86 is 43