Is the following number a prime number.

$103$

Is the following number a prime number.

$201$

Is the following number a prime number.

$307$

Write the smallest and the greatest three-digit prime numbers.

Give examples of each of the following.

Two prime numbers whose difference is also a prime number.

Give examples of each of the following.

Two prime numbers having the same digits, like $13$ and $31$.

Give examples of each of the following.

Two composite numbers less than $100$ ending with $9$.