When I click the StackExchange button and select hot questions, there is a number next to the questions. What is that number suppose to represent? I have tried looking at, adding, subtracting and so on... the votes, comments, and number of the views, but nothing adds up.

I can click on the number and it will bring me to the question.

![what is this][1]


  [1]: https://i.sstatic.net/jYQI3.jpg