About this tool
Break a whole number into its prime factors and see whether it is prime.
Trial division by 2 and then odd numbers up to √n. Whatever remains above 1 is itself prime.
Formula: n = p₁^a₁ · p₂^a₂ · …
Example: Number = 360 → Prime factorization = 2^3 × 3^2 × 5, Is prime = 0.
Numbers up to one trillion (10¹²) are supported.
Quick steps
- Enter your values — every field shows its unit.
- Press Calculate (or Try an example to see how it works).
- Read the results and copy them if you need them elsewhere.
The calculation runs in your browser. Nothing you type is sent to 1CLIK.
FAQ
How does the Prime Factorization Calculator work?
Trial division by 2 and then odd numbers up to √n. Whatever remains above 1 is itself prime.
What should I keep in mind?
Numbers up to one trillion (10¹²) are supported.
Is my data sent anywhere?
No. The numbers stay on your device; the page only shows the result.