Ever tried filing taxes, opening a U.S. bank account, or applying for a loan and hit a wall because you don’t have a Social Security Number? That’s where a taxpayer identification number (or TIN) can ...

This nine-digit number identifies your bank or credit union in a financial transaction. Many, or all, of the products featured on this page are from our advertising partners who compensate us when you ...

Affiliate links for the products on this page are from partners that compensate us and terms apply to offers listed (see our advertiser disclosure with our list of partners for more details). However, ...

What is a state tax ID number, and what is it for? A state tax ID number is sometimes called a state employer ID, state EIN or state tax registration. It’s assigned by a state to identify a business ...

What better time to contemplate the conundrum that is zero than the start of a new year? Zero is a fairly new concept in human history and even more recent as a number. It wasn't until around the 7th ...

Renee Sylvestre-Williams is a finance and business reporter. In her more than 10 years of journalism, her work has been published in the Globe and Mail, Flare, Canadian Living, Canadian Business, the ...

Renee Sylvestre-Williams is a finance and business reporter. In her more than 10 years of journalism, her work has been published in the Globe and Mail, Flare, Canadian Living, Canadian Business, the ...

What is the most important number in the entirety of mathematics? Ok, that’s a pretty silly question – out of infinite possibilities, how could you possibly choose? I suppose a big hitter like 2 or 10 ...

There are infinitely many prime numbers, but the biggest one we know of goes by the name M136279841 and contains more than 41 million digits. When you purchase through links on our site, we may earn ...

What is the most bizarre real number that you can imagine? Probably many people think of an irrational number such as pi (π) or Euler’s number. And indeed, such values can be considered “wild.” After ...