What is 13?

13 is a natural number that follows 12 and precedes 14.

• Mathematics:

  • It's a prime number.
  • It is a Fibonacci number.
  • It is a lucky number.

• Cultural Significance:

  • In some cultures, 13 is considered an unlucky number. Friday the 13th is a superstition about this matter.
  • A group of 13 is sometimes called a "baker's dozen".

• Other:

  • There are 13 original British colonies that formed the United States of America.