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\documentclass{article}

\usepackage[utf8]{inputenc}

\begin{document}

\maketitle

\text{I can't use the #-symbol}

\end{document}
CarLaTeX
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Agape Gal'lo
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  • I wanted to be more specific than other questions... – Agape Gal'lo Dec 07 '18 at 19:37
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    Table 1 in the LaTeX Comprehensive Symbol List. – Werner Dec 07 '18 at 19:39
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    @AgapeGal'lo I'm not sure if this is the correct way of using this site. Anyhow, if your question gets closed as a duplicate, people will still find your question (only marked as closed) and will see the linked duplicate, where they can learn more. Anyhow, searching for You can't use `macro parameter character #' returns a handful of questions with the same problem... (By the way, I didn't downvote your answer). – Phelype Oleinik Dec 07 '18 at 19:42

1 Answers1

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Very simple: you need to use \ in front of the # symbol: 

\#
Phelype Oleinik
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Agape Gal'lo
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