What Makes Numbers Feel Special?

Some numbers are just cooler than others. Like how your favorite toy feels extra special, numbers can be like that too. For example, 10 is special because we count in tens, and 7 is cool because it doesn’t divide evenly into 10. People give special names to these kinds of numbers, like prime numbers, which are only divisible by 1 and themselves. Fun examples include 2, the smallest prime number, and 3, which helps us make triangles in geometry.