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# How do you find a composite number?

Updated: 4/28/2022

Wiki User

8y ago

To find a composite number, think of two numbers that can be multiplied to equal that number. For example, 15 is a composite number because its factors are 1, 3, 5 and 15. For a number to be composite, it should have more than two factors.

To know 15 is a composite number, know:

1 x 15=15

3 x 5 =15
All composite numbers have more than two factors whereas prime numbers have only two factors.

Wiki User

8y ago

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Related questions

### What Method used to find composite numbers?

To find a composite number, check if the number can be divided by 2,3,4,5, ect. If it can, it`s composite. If not, it`s prime.

### How do you find the composite number?

Factor it. Once you find a third factor, it's composite.

### How do you determine a composite number?

Composite numbers have more than two factors. Once you find a third factor, you know your number is composite.

### Who to find out composite number?

it was albert einstien

### How do you know it is a composite number?

A number is composite if it has more than two factors. Once you find a third, you know.

### How do you tell if a number is composite?

A number is composite if it has more than two factors. Once you find a third, you're done.

### Is 1155 prime composite or neither?

1155 is obviously a multiple of 5 and a multiple of 11, so it is a composite number.

### How you determine if a number is composite?

Factor it. If you find more than two factors, it's composite.

### How do you find the LCM of a composite number?

You need at least two numbers to find an LCM. It doesn't matter whether they are prime or composite.

### What are all lists of the factors of a composite number?

One needs the composite number before he can find its factors. Thus the solution I shall give is &infin;.

### How do you find that any number is a prime number or composite number?

A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.

### How do you check if a number is prime or a composite number?

A number is prime when it only has one and itself as factors is prime. Therefore, to tell if a number is prime or composite simply find it's factors. If it has more than two factors than it is not a prime number, it is composite.