Daily Brain Puzzle
Start every day with a brain puzzle that sharpens your mind in minutes.
The best cognitive habits are the ones that stick. Prime 59’s daily brain puzzle gives you a reason to exercise your mind every single day. Each morning, a new prime number grid is released worldwide — the same puzzle for every player. Solve it, compare your time on the daily leaderboard, and watch your streak grow. It takes just 2–10 minutes depending on difficulty, making it the perfect brain puzzle to fit into any routine. Build your streak, sharpen your math skills, and join thousands of daily solvers.
How It Works
Three steps to your first solve.
Pick Your Difficulty
Choose from Easy to Master — five levels that scale to match your skill.
Fill the Grid
Place prime numbers so every row and column sums to exactly 59.
Beat the Clock
Faster times earn higher scores. Compete on leaderboards or battle friends live.
Everything You Need
Prime Numbers Only
Use 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, and 31 to fill the grid.
5 Difficulty Levels
Easy to Master — from relaxing warm-ups to serious brain challenges.
Daily Challenge
A new puzzle every day, the same for every player worldwide.
Multiplayer Battles
Race friends or random opponents in real-time 1v1 puzzle races.
Global Leaderboards
ELO ratings, daily rankings, and per-difficulty leaderboards.
32 Languages
Play in your language — available in 32 languages worldwide.
Frequently Asked Questions
Ready to Play?
Download Prime 59 for free and start solving. Available on iOS, Android, and the web.