\begin{align}
\textbf{Q: } & \text{ What is the prime factorization of } 2^{67}-1\text{?} \\[4pt]
\textbf{A: } & ~193{,}707{,}721 \times 761{,}838{,}257{,}287.
\end{align}
Everybody knows that Frank Nelson Cole did this by hand. (Except those who don't.)