Regex that detects in target only all numbers where full stop as thousand separator is not used

HI, Can anyone help with the following regex?

I need a regex that detects in target only all numbers where full stop as thousand separator is not used.
Search is source is not possible because is not consistent and containd all variants of thousand separator

You can try this:

  • Target: `[^ ^.][0-9]{3}``
  • Regex Mode: Enabled

It searches for a sequence of 3 digits not preceded with a space or with a dot.