Let $P$ be the D2276: Set of prime integers.

Then
\begin{equation}
\# \{ p \in P : p + 2 \in P \} = \infty
\end{equation}

Conjecture on D583: Twin prime integer

Formulation 0

Let $P$ be the D2276: Set of prime integers.

Then
\begin{equation}
\# \{ p \in P : p + 2 \in P \} = \infty
\end{equation}

Also known as

Polignac's conjecture