Number Lab

Sasha Harris

About this app

What does 144 have in common with a beehive, a Roman monument, and a computer's binary register? NumberLab shows you — the moment you type it in.

Enter any whole number and watch a full dashboard of analysis unfold at once: its complete factorization, whether it's prime (and which primes sit just before and after it), which numbers from 2 to 20 it divides evenly into, and why. Curious how it looks carved in stone? NumberLab converts it instantly to and from Roman numerals. Need it in binary, octal, or hexadecimal for a coding project? It's all there, side by side, ready to copy with a tap.

Beyond the basics, NumberLab digs into the number's deeper identity — is it a perfect number, hiding in the Fibonacci sequence, forming a triangular pattern, or a palindrome that reads the same forwards and backwards? A dedicated GCD/LCM tool handles two-number comparisons for homework, puzzles, or curiosity-driven rabbit holes.

Found something interesting? Bookmark it. Your Saved Entries page keeps a running collection of numbers you've explored, each tagged with a quick summary so you can jump back into 2,584 or 999 without re-deriving what made them worth remembering in the first place.

Whether you're a student double-checking factor trees, a puzzle enthusiast chasing perfect numbers, or just someone who's always wondered what's really going on inside a number — NumberLab turns idle curiosity into an instant, satisfying answer.

Features at a glance:
- Factorization & full divisor breakdown
- Primality checks with nearest neighboring primes
- Divisibility rules for 2 through 20, explained
- Bidirectional Roman numeral conversion
- Binary, octal, decimal, and hex conversion
- Perfect, Fibonacci, triangular, and palindrome checks
- GCD/LCM calculator for any two numbers
- Bookmarkable Saved Entries with quick-reference tags