The Number 13 in Roman Numerals

Triskaidekaphobia is fear of the number 13. A triskaidekaphobe has a strong feeling that 13 is an unlucky number. It is also related to paraskevidekatriaphobia which is the fear of Friday the 13th. This day is believed an unlucky day in Western superstition. 

There are some theories about the reason for this fear. One of them is related to Christianity. Judas who betrayed Jesus was the 13th person at the Last Supper. And Death is the thirteenth Major Arcana card in the Tarot deck. 

However, it is very hard to say when the first time the number thirteen got its bad reputation. On the other hand, the number 13 is considered a sign of good luck in several cultures.

Even some street numbers in Western cities are altered to avoid the use of the number 13 and the thirteenth day of the month is considered unlucky, you can still see this number is also very popular.

For example, Taylor Swift believes that 13 is her lucky number. December 13 is her birthday too!

You remember Dr. Remy Hadley on TV series “House M.D.” She was an important character on this show and she was most known as “Thirteen”.

13 is written as XIII in Roman Numerals System.

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