Good Morning. The first 3 numbers tell the maker of Sears Appliances.
Other people may be able to give you a better answer if you know who makes it.
Some of there stuff is good, some not so good. But you can always get parts easy. (Hopefully You will not need parts any time soon)
The number will be 123.4567890 or something similar. The first 3 are manufacture code.
Good Luck, Have a Great Day.