New News Maths #4

Prime & Composite Numbers

Prime Number = only factors are 1 & itself

There is no easy way to find out if a number is or is not prime; Only way is trying

Ask yourself these questions repeatedly (Yes/No):

Is it a multiple of ‘2’?

Is it a multiple of ‘3’?

Is it a multiple of ‘5’?

Is it a multiple of ‘7’?

Is it a multiple of ‘11’?

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Composite Number = ‘Number That ≠ Prime’

Note: 1 isn’t a composite number; All even numbers (except 2) are composite numbers