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Prime Number Hunt

Spot the prime among numbers that look like primes.

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About Prime Number Hunt

Find the prime number hiding among tricky composites like 51, 91 and 119, and decide whether a number is prime. Every 'no' shows the factors that give it away.

How to play Prime Number Hunt

  1. Pick the prime number, or decide if a number is prime.
  2. Choose a mode: Classic (10 timed questions), Speed run (60 seconds), Survival (three lives) or Daily (the same questions for everyone today).
  3. Tap an answer or press 1–4. Faster correct answers score more, and three in a row adds a streak bonus.
  4. Review every answer at the end, and share your daily result without spoilers.

Prime Number Hunt FAQ

Is there a daily Prime Number Hunt challenge?

Yes. Daily mode gives everyone the same questions each day, resetting at your local midnight, with a shareable result grid.

Is Prime Number Hunt free to play?

Yes. Prime Number Hunt is free in your browser on OFF PLAY, with nothing to download or install.

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