There are countless math problems that are larger than the number of questions. If the conditions of natural numbers are attached, they are as follows:

0< 1, 1 1, 1>0

It can be divided into prime number, composite number, 1 and 0.

1, prime number: only 1 and its own natural number are called prime numbers. Also known as prime numbers.

2. Composite number: a natural number with other factors besides 1, which is itself called a composite number.

3. 1: There are only 1 factors. It is neither a prime number nor a composite number.

4, of course, 0 can't calculate the factor, just like 1, which is neither a prime number nor a composite number.