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A Prime Number is a special number that has only two factors: 1 and itself. That means it can only be divided evenly by 1 and the number itself — no other number works!
Here are some examples of prime numbers:
2 ✔️
3 ✔️
5 ✔️
7 ✔️
11 ✔️
All of these have exactly two factors.
2 is the only even prime number! All other even numbers can be divided by 2, so they’re not prime.
Prime numbers are used in secret codes and computer security (cool, right?)
You use primes when finding the smallest pieces a number can be broken into
“Prime or Not?” Shout Game
1️⃣ One person calls out a number under 50.
2️⃣ Everyone else shouts “prime!” or “not prime!”
3️⃣ If it’s prime, say its only two factors. If not, name at least one more factor.
This game builds number sense and helps kids spot prime numbers fast!
Prime numbers are like the “building blocks” of all other numbers. Once you learn them, you’ll start seeing how they help make math work behind the scenes.
Power up your math skills with our Medium or Hard level Division Quiz! 🎯