Ok so i have been trying to do this and i pretty much keep on failing :p
Basically what i want to do is take the date 10/1/2013 and turn it into 201310. I tried to concatenate using left and right. tried to make it into text using left and right. Nothing seems to be working. The closest i got was to 20130 by using =CONCATENATE(TEXT(J3,"mmyyyy")) Which turned the date into 102013 than i tried  =RIGHT(L3,4)*LEFT(L3,2) and got 20130 which is still incorrect. Any help would be appreciated! 
                        
You could simply turn around your first example and use the correct string:
Note, I used upper case
M. Lower casemmeans minutes, while upper caseMmeans month.The
CONCATENATEis unnecessary.Please also note, that this is prone to localization issues, i.e. it depends on the language settings. I am from Germany and I need to use
jjjjinstead ofyyyy.