In our daily life, some seemingly ordinary formulas contain magical secrets. These formulas look simple on the surface, but there are profound mathematical principles behind them.

Let's look at a magical formula:11x11. This formula seems simple on the surface, but the mystery behind it is surprising. When we calculate the result of this formula, the result is 12 1. However, this result is not an ordinary number, it represents a mysterious number-a bright number. A bright number is a number that can only be divisible by 1 and itself, and 12 1 is one of the bright numbers.

Next, let's look at a magical formula: 12 x 12. The result of this formula is 144. Similarly, this result is also a magic eye-catching number. Bright numbers have unique properties, and cannot be divisible by any other number except 1 and itself. And 144 is such a bright number.

In addition to these magical formulas, there are some interesting mathematical phenomena, such as Armstrong number. Armstrong number refers to a number with n digits, and the sum of the n powers of each digit is equal to itself. For example, 1 3+5 3+3 3 = 153, which is an Armstrong number.

These magical formulas and mathematical phenomena not only make us feel surprised and happy, but also make us understand the mystery and charm of mathematics more deeply. Mathematics is a subject full of wisdom and magic, which allows us to constantly explore and discover new knowledge. Through these magical formulas and mathematical phenomena, we can better understand the essence and value of mathematics, so as to better apply it to our daily life.