Note: Number 1 is neither a prime number nor a composite number. Prime Number Definition: A prime number is a natural number greater than 1 that can be divided exactly only by itself and 1, for example,- 5, 7, 19 and 23. Another way of explaining this is to say that If p is a prime number, then the only factors it can be 1 and p itself.
When being divided, the answer must be a positive integer (natural number), without any fractions, decimals, or remainders being left over. Prime Numbers: A prime number is a natural number that is only divisible by 1 and itself.
