**Number 13: Symbolism & Significance**
The number **13** is a unique and intriguing figure that carries diverse meanings across cultures, mathematics, and spirituality.
- **Mathematical Properties**: 13 is a **prime number**, meaning it cannot be divided by any number except 1 and itself. It follows 12, a number associated with completeness (12 months, 12 zodiac signs, 12 hours), making 13 feel like an unconventional or disruptive force.
- **Superstitions & Beliefs**: Often labeled as **unlucky** in Western culture, 13 is linked to myths such as Judas being the 13th guest at the Last Supper, or Norse legends where Loki caused chaos as the 13th god. Many hotels and buildings avoid using the 13th floor due to this superstition.