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The knowledge of prime numbers is useful when finding the lowest common multiple or the highest common factor of two or more numbers.

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Q: Why is it important to know a prime number?
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Related questions

Why is knowing if a number is prime important?

Because you can know if your answer will be a whole number when you divide.


Why is it important to know if a number is prime or composite?

A prime number can never be composite in any case. There is an exception for 2 which is both.


What clues let you know that a number is not prime?

You know a number is not prime when the multiples are not limited to that number and 1.


Is 12 a prime or deposit number?

It is not a prime but do not know what a deposit number is.


How do you know that 7 is a prime number?

You know that 7 is a prime number because it only has two factors.


Is 41 a composite number or prime number?

It is a Prime Number.41 is prime.


Who can you easily know if it is prime?

Do you mean, "How can you easily know whether or not a number is prime?"


Why is is important that 1 is not a prime number?

It important that 1 is not prime because a quote says: "A prime number is a natural number that has exactly two different natural number factors. and so i say 1 is not a prime because a prime number has 2 factor 1 and it self and 1 dose not.


What is the number of prime numbers?

It is impossible to know the number of prime numbers because there is an infinite number of them.


How do you know if a number is prime or not?

You will know because a prime number can only be divided by itself and one (1), if it can be divided by anything else then you will know that it is not a prime number.


Is 1000000007 a prime number or a composite number?

It is prime. I have suggestion for you. Whenever you wanted to know a number is prime or not, use the calculator of this site: prime-calculator dot com.


How can you be sure that they are prime numbers?

The only way to know if a number is prime or not is to try and divide it by every number and if non of them work then it is a prime number