Keep only number in regex lines

I have a list that following is a sample of my list:

Bolt

®1421918Users

Classmates

666138Users

SixDegrees

470621Users$$

PlanetAll

AT308079Users

theGlobe

214442Users

1997

Now I want to keep only number Users from Users lines
For example:

Bolt

1421918Users

Classmates

666138Users

SixDegrees

470621Users

PlanetAll

308079Users

theGlobe

214442Users

1997

I tried following regex in notepad++ but not working:

Find What = ^.*?(\d+Users)
Replace = \1

and tried following regex:

Find What = ^(?!\d+Users).*\r?\n?
Replace = [Empty]

How to fix this regex problem?

>Solution :

You should search using this regex:

[^\n\d]*(\d*Users).*

and replace with '$1

RegEx Demo

RegEx Details:

• [^\n\d]*: Match 0 or more of any characters that are not digit and not a line break

• (\d*Users): Match 0 or more digits followed by text Users. Capture this value in group #1

• .*: Match everything else till end

• Replacement is $1 which is back-reference of capture group #1