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

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Q: How do you tell if a number is composite?
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How can you tell 3458 is prime or composite number?

It is even and therefore composite.


Can you tell a prime or composite number by seeing if its odd or even?

You cannot. If a number is even - other than 2 - then it is a composite number. However, if it is odd, it is not easily possible to tell whether it is prime or composite.


How can you tell that 40 is a prime or composite number?

It is a composite number because it's an even number and it has more than two factors


Is 308 a prime or composite number?

it is a composite number because you can tell from the 8 that it is an even number, and even numbers can always be divided.


Is 743235 prime or composite?

A good way to instantly tell if a number is prime or composite is to learn some tricks to tell if a number divides by certain numbers. For instance, if a number is even, we know it is composite as it must be divisible by 2. If a number ends in 0 or 5, then it also cannot be prime as it would be divisible by 5. In this case, the number ends in 5, so we can tell it must be composite and cannot be prime.


How can you tell what a composite number is?

It has more than two factors.


How can you use a models to tell if a number is prime or composite?

you cant


How can you tell the difference between a prime number and a composite number?

Prime numbers have two factors. Composite numbers have more than two.


What are three examples of composite numbers and tell why they are composite?

30 50 70 because they both end in 0 and 10 is a composite number


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.


Do you need to list every factor of a number to tell if it is prime or composite?

No. As soon as you have more than two, it's composite.


Is 34 a composite or prime?

Composite. Since it is very easy to decipher if 34 is prime or composite, I assume you are unfamiliar with the definitions of prime and composite. A prime number is a number that has only two factors: 1 and itself. A composite number is a number that has more than 2 factors: 1, itself, and other(s). You can immediately tell that 34 is composite because it is even, and the number two is the only EVEN number that is prime.