What makes a number prime?
Prime Rockstars
What makes a number prime?
Numbers have secret identities. Some can be split into equal groups — 12 cookies can become 3 piles of 4, or 4 piles of 3. But some numbers refuse to share evenly. They're the loners, the oddballs, the ones that won't divide no matter how hard you try. We call them prime numbers, and they're kind of the rockstars of math.
Let's meet the first prime: the number 2. You can split 2 into… well, just 1 and 2. That's it. No other whole numbers multiply to make 2. Try it — 2 ÷ 3? Nope. 2 ÷ 4? Nope. The only way to build 2 is 1 × 2. That makes 2 prime — and the only even prime number that exists.
