View Source Credo.Check.Readability.LargeNumbers (Credo v1.7.7)


This check is enabled by default.

Learn how to disable it via .credo.exs.

This check is tagged :formatter

This means you can disable this check when also using Elixir's formatter.

This check has a base priority of high and works with any version of Elixir.


Numbers can contain underscores for readability purposes. These do not affect the value of the number, but can help read large numbers more easily.

141592654 # how large is this number?

141_592_654 # ah, it's in the hundreds of millions!

Like all Readability issues, this one is not a technical concern. But you can improve the odds of others reading and liking your code by making it easier to follow.

Check-Specific Parameters

Use the following parameters to configure this check:


The check only reports numbers greater than this.

This parameter defaults to 9999.


The check allows for the given number of trailing digits (can be a number, range or list)

This parameter defaults to [].

General Parameters

Like with all checks, general params can be applied.

Parameters can be configured via the .credo.exs config file.