Homonym: number 13 (Superstition)
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 may stem from historical events or religious beliefs, such as the presence of 13 individuals at the Last Supper, where Judas Iscariot betrayed Jesus.
In mathematics, 13 is classified as a prime number, meaning it can only be divided by 1 and itself. It is also 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.