Number Grid Puzzle
Fill the 6×6 grid with prime numbers so every row and column hits 59.
Number grid puzzles are among the most satisfying logic challenges — there’s something deeply rewarding about filling every cell and watching the constraints click into place. Prime 59 is a number grid puzzle with a unique twist: instead of avoiding repeated digits, you’re working with prime numbers and targeting a specific sum. The 6×6 grid format is compact enough to solve in minutes but deep enough to require genuine strategic thinking, especially at higher difficulty levels where fewer cells are pre-filled.
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.