# Big Pi or product pi(Π) symbol in LaTeX

Symbol/Unicode Big Pi/U+03A0
Type of symbol Greek capital letter
Package (requirement) No
Argument No
Latex command \Pi
Example \Pi → Π

You need to use the \Pi command to print the Big Pi symbol in a latex document. This is the default command of latex.

\documentclass{article}
\begin{document}
$$Big\; pi =\Pi$$
\end{document}

Output :

## Big pi with limits

You need to use \Pi_{subscript}^{superscript} command to write Limits with the Big Pie symbol. But I will not recommend this process when you use limits.

\documentclass{article}
\begin{document}
$$\Pi_{i=1}^\infty a_i$$
$$\Pi_{i=1}^5 i^2$$
\end{document}

Output :

As you can see in the example above, the symbol does not look very good with limits, so it is best to use the \prod command and use \prod_{subscript}^{superscript} to add limits. This is also a default latex command. Below are some examples.

\documentclass{article}
\begin{document}
$$\prod_{i=1}^\infty a_i$$
$$\prod_{i=1}^5 i^2$$
$$\prod_{i=1}^k \frac{n+1-i}{i}$$
\end{document}

Output :

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