Homonym: 13 (Unlucky)
The number "13" is an integer that follows "12" and precedes "14." It is often considered an unlucky number in various cultures, a belief known as triskaidekaphobia. This superstition has led to the omission of the number in some buildings, such as the absence of a 13th floor in certain hotels and skyscrapers.
In mathematics, "13" is classified as a prime number, meaning it can only be divided by 1 and itself without resulting in a fraction. Additionally, it is the sixth Fibonacci number, appearing in the famous Fibonacci sequence, which is a series of numbers where each number is the sum of the two preceding ones.