Do you mean, "How can you easily know whether or not a number is prime?"
i know what 2 prime numbers are. you want to know? do you really want to know. well, heres the answer. i don't know what 2 prime numbers are but i do know what 2 prime numbers are. sorry. hahaha. :)
No, you can easily see that this is an even number, so it is a multiple of 2.2 IS A PRIME NUMBER!!Any number that is a multiple of a prime number is NOT a prime.
When it is divisible by itself and one.
check prime nimbers first
When all of the factors are prime.
You know that 7 is a prime number because it only has two factors.
You know a number is not prime when the multiples are not limited to that number and 1.
As you can easily check, it is divisible by 3.As you can easily check, it is divisible by 3.As you can easily check, it is divisible by 3.As you can easily check, it is divisible by 3.
69 is composite 1,69,3,23 are the factors.
You can easily work it out. firstly, you know that the even numbers are not prime, so that leaves only ~15 numbers. You can check out each number. [hint you only have to test for factors of a number up to the square root of the number.]
Prime numbers only have two factors.
It is not a prime but do not know what a deposit number is.