Factorial Calculator
n! for n up to 170.
Result
10!3.628800e+6
Exact3628800
Factorial Calculator — FAQs
What is 10!?
3,628,800 — 10 × 9 × 8 × … × 1. Factorials grow faster than exponentials; 170! is the largest representable in double precision.
What is n!?
n × (n−1) × … × 1 — the number of ways to arrange n distinct items. 5! = 120.
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