Specimen VII · 05
Project Euler
free
Math-oriented programming puzzles, approaching problem 1000
Removed leaderboard due to cheating, adding rolling rank table. Free.
| Habitat | Competitive |
| Access tier | free |
| Relevance to stack | low |
| Last active signal | Problem 1000 milestone June 6, 2026 |
| Verified alive | yes — pressed 2026 |
| Specimen no. | VII · 05 |
| Live habitat | https://projecteuler.net |