answersLogoWhite

0


Best Answer

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.

User Avatar

Wiki User

14y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

14y ago

if it can only divide by 2 numbers itself and 1 it is prime if it can divide by any other number it is not or in the case of 1 it can only be divided by 1 number so it is still not

This answer is:
User Avatar

User Avatar

Anonymous

Lvl 1
4y ago

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 nu

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How do you know if a number is prime or not?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

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?"


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.


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


Is 331 a prime number or a composite number?

yes, 331 is a prime number. can you divide it by anything except for 1 and 331? no, and that is how you know it is prime.


Is 29 an prime or composite number?

It is prime. Whenever you wanted to know a number is prime or composite, use this site. It can tell you the number is prime or not: prime-calculator dot com. It has lots of other abilities. Enjoy it.


How do you know that 19 is a prime number?

you know that nineteen is a prime number because it only divides by one and itself. hopefully that helped


Is 19 a prime number how do you know?

you know that nineteen is a Prime number because it only divides by one and itself. hopefully that helped