UD5 Toolkit
Prime Number Racer – Tap the Primes as Fast as Possible
Tap only the prime numbers as they scroll across the screen. Avoid composites and stay alive in this fast‑paced math game that tests your number sense.
Tag: Prime Number Checker & Finder
3+ toolsMersenne Prime Checker - Online 2^p‑1 Validation
Check if a number of the form 2^p‑1 is a Mersenne prime. Quick Lucas‑Lehmer test simulation for small p.
Next Prime Number Finder - Online Integer Sequence
Enter any integer and quickly find the next prime number after it. Perfect for hashing and puzzles.