Change hyperlink automatically according to the cell

i will explain what i need to be done i have in different cells the code of some projects. These projects have a specific url please see bellow
20484
20479
20478
20477
20476
20475
20474
20473
20472

the url for all these is the same with the only difference the number in the end like:

https://services.anavasis.gr/Adminis...say/Edit/20484

i need to make all projects have that hyperlink but changed with the identical number. So all above should be linkable and sending to each project every time.

Thank for answering.
Moreover after having the links done how is it possible to multiple open then in firefox?