# "Three is a number."

## Translation:Drei ist eine Nummer.

## 19 CommentsThis discussion is locked.

I found this:

`A Nummer is a numeric identifier or a rank, a Zahl is a quantity.`

and this

`Nummern designate something specific, such as a phone number, or indicate the order of something, such as house numbers or room numbers. In contrast to Zahlen, you cannot apply arithmetic operators to Nummern. You may, for instance, add two telephone numbers (Telefonnummern) as if they were Zahlen, but the result is completely meaningless.`

Here: http://forum.wordreference.com/showthread.php?t=1206849#top

In this sentence both "Zahl" and "Nummer" should be accepted. The use of Nummer is very common in many situations where it is the only correct word to use: phone number, house number, credit card number, order number, number in a race, article number, etc. Right now, I can't think of any good examples for Zahl other than 'page number' and the use in mathematics...

- 1196

Actually not. *Zwei* is a *Zahl*. *2* is a *Nummer*.
Numerical identifiers are always written in numbers, not spelled out.

- 304

Thank you, Hohenems and Germandy. With these explanations, I should be able to keep these straight.