I started a new Excel document, right clicked the cell I'm working in and checked the format which is set to general. I enter a range of "3-5000" in a cell and it automatically changes to "Mar-00". I again right click on the cell and change the format to back to general (it has changed itself to MMM-yy) and I get "1132313". I tried this on 2 different computers so I'm wondering if there is a setting that is causing this and where does the number "1132313" come from?