🏹 Prime Hunt
Sixteen numbers, one quick call each — prime or composite?
How to Play Prime Hunt
Goal: correctly classify all 16 numbers as prime or composite.
Controls: click PRIME or COMPOSITE for the number shown. It immediately moves to the next one.
Tips:
- Quick checks: even numbers above 2, and any number ending in 5 above 5, are never prime.
- You only need to test divisibility up to the square root of the number — you don't need to check anything larger.
More Puzzles
- 🔤 Word Quest — Crack the hidden word in 6 tries.
- 🔀 Anagram Blitz — Unscramble a themed word before you run out of hints.
- 🔑 Cryptogram — Every letter stands for another. Decode the line.