We use place value headings like 10, 100, 1000. These help us do sums and see which numbers are bigger than others. A number is made of one or more digits. The number 6379, for example ...

But once the stock begins trading, the par value becomes irrelevant as pricing is determined by market supply and demand. For example, the par value for Amazon.com Inc. (ticker: AMZN) stock is $0. ...