The whole page was created with Claude Code. These were the most significant prompts that shaped this page:

1. Create a D3 visualization that puts circles on a polar coordinate system for integer n 1 to 200 for the coordinates (n, n)
2. Show faint radial lines at all π/3 steps
3. Use the same color for all circles: fill: #369; fill-opacity: 0.5; stroke: #000; stroke-opacity: 0.5
4. Highlight all circles where n is prime (red, larger radius)
5. Start circles small and grow them with larger n
6. Add an N_max label, number input, and slider — all connected — to control how many points are shown
7. Scale the spiral so it always fills the whole SVG as N_max changes
8. Add a "show only prime" checkbox that filters to primes only when checked
9. Replace the uniform radial lines with 6 / 12 / 24 / 48 spokes per ring, increasing density outward
10. Start the n loop at 0 so there is a circle in the middle
11. Add a checkbox to switch between the Archimedean spiral and an Ulam spiral