Speed Math Challenge
Race the clock — how fast can you solve a prime number grid?
Prime 59’s time-based scoring turns every puzzle into a speed math challenge. The clock starts when you see the grid and stops when you fill the last cell. Faster times earn higher scores, with par times ranging from 2 minutes (Easy) to 20 minutes (Master). In Battle Mode, you’re racing against another player in real-time, adding even more pressure to think fast. If you love the rush of solving math problems against the clock, Prime 59 is the ultimate speed math challenge.
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.