$ModuleNumber

gives the current serial number to be used for local variables that are created.

Details

$ModuleNumber is incremented every time Module or Unique is called.
Every Wolfram System session starts with $ModuleNumber set to 1.
You can reset $ModuleNumber to a positive machine integer, but if you do so, naming conflicts may lead to inefficiencies. »

open allclose all

Each use of Module increments $ModuleNumber:

Use a module number dependent on your Wolfram System session:

$ModuleNumber will now increment starting from this number:

$ModuleNumber is also used by Unique to create new symbols from given ones:

If given a string, it creates the first available symbol of the form xnnn:

You can reset $ModuleNumber:

However, its next use may cause $ModuleNumber to be incremented more than once due to conflicts:

Top