is it prime or composite?

By definition and convention, $2$ is the smallest prime number, so it is not prime.

If a number is composite, then it is a product of prime factors $p_{1}^{k_1}p_{2}^{k_2}\cdots p_{n}^{k_n}$ however any prime $p$ you may pick is positive and larger than $1$ so any product will be larger than $1$ . So $1$ is not composite.

$\implies \boxed{neither}$