Take your cell phone number. Enter it into a calculator as a set of digits as numbers, and the dashes as a minus sign. At the end of the phone number, hit the enter/equals button.
Let’s take Empire carpet’s old number:
Of course now it has a 1-800 number:
A few phone factoids. 989 is the highest area code in America. It’s for Upper central Michigan (Mt Pleasant, Saginaw). The highest prefix for the 989 area code is 996 given to Verizon Wireless customers. (source.
Computer industry pioneer Steve Wozniak, a collector of phone numbers, obtained the phone number 888-888-8888, but it proved unusable: Children playing with phones would dial it, resulting in more than a hundred wrong numbers a day. (via wikipedia)