13 (number)

This article is about the number thirteen. For the year, see 13.

Thirteen – 13

••••• ••••• •••
Order	thirteenth
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 30 40 50 60 70 80 90 100

Thirteen is the number that is after twelve and before fourteen.

Many people think thirteen is an unlucky number, especially when it is Friday the thirteenth. Many people think that this is superstition. There is no proof that thirteen is an unlucky number.

Floors in tall buildings often skip floor thirteen. The idea of thirteen as an unlucky number was created in Norse mythology. Some Christians think that Jesus was crucified on the thirteenth^[source?]. Some people also think that it is unlucky to have thirteen people sitting at a table at a meal. Death is number thirteen in the tarot deck.

In Roman numerals, 13 is written as XIII.