Move #\d+ to start of line.

I am unable to move #\d+ (#1, #12 etc) to start of line.
What it means the move count lable, if I choose to be it in RegEx.?

Modern JavaScript Tutorial #3 - Control Flow ---> #3 Modern JavaScript Tutorial - Control Flow
PHP Tutorial #37 - Null Coalescing ---> #37 PHP Tutorial - Null Coalescing

The following works for me:
Replace: (.*)(#\d+ )
With: \2\1

Make sure you are selecting "Use regular expressions"

Reply to #2:
Thanks a lot.. It works
what does it means \2\1?
would you like to explain me.

Reply to #3:
See the User Guide:
www.advancedrenamer.com/user_guide/regular_expresions