GCF for 42 and 46

What is the Greatest Common Factor of 42 and 46?

Answer: GCF of 42 and 46 is 2

(Two)

Finding GCF for 42 and 46 using all factors (divisors) listing

The first method to find GCF for numbers 42 and 46 is to list all factors for both numbers and pick the highest common one:

All factors of 42: 1, 2, 3, 6, 7, 14, 21, 42

All factors of 46: 1, 2, 23, 46

So the Greatest Common Factor for 42 and 46 is 2

Finding GCF for 42 and 46 by Prime Factorization

The second method to find GCF for numbers 42 and 46 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 42: 2, 3, 7

All Prime Factors of 46: 2, 23

As we can see there is only one Prime Factor common to both numbers. It is 2

So 2 is the Greatest Common Factor of 42 and 46

Related Calculations

GCF Table

Number 1Number 2GCF
27461
28462
29461
30462
31461
3246
33461
34462
35461
36462
37461
38462
39461
40462
41461
42462
43461
44462
45461
464646
47461
48462
49461
50462
51461
52462
53461
54462
55461
56462

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 Factor of 42 and 46? (The answer is: 2). Select the first number (e.g. '42') and the second number (e.g. '46'). 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

FAQ

What is the Greatest Common Factor of 42 and 46?

GCF of 42 and 46 is 2