Prime
Lattice
Every integer placed on a tiling. Primes light up. Look for the lines.
◀ The HABB Game Room
Tiling
Ulam spiral
Square grid
Hex spiral
Triangles
Sacks spiral
Prime walk
Gaussian primes
How many numbers
Hex spiral method
Concentric rings (the cube)
Adjacent edge (connected)
Columns
(grid & triangles)
auto
primorial:
2
6
30
210
Shade dead columns (φ law)
Highlight a prime family
None — all primes one color
Twin (p±2 prime)
Cousin (p±4 prime)
Sexy (p±6 prime)
Sophie Germain (2p+1 prime)
Safe ((p−1)/2 prime)
Mersenne (2ⁿ−1)
Palindromic
Emirp (reversal is a different prime)
Split by p mod 4 (1 vs 3)
Colors
primes
family
Show composites (dim)
Numbers when zoomed in
Reset view
Save PNG
Wheel = zoom · drag = pan · click a tile to inspect.
Heir to the 2014 Prime Number Table. Single file, no dependencies.
click a tile
wheel zoom · drag pan