eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee/e.tex

\documentclass[10.5pt,letterpaper]{article}

\begin{document}

\newcount\i
\i=9999
\loop
  e
  \advance \i -1
\ifnum \i>0
\repeat

\end{document}