Factorial Calculator
Calculate the factorial (n!) of a number. Supports large numbers using BigInt.
About Factorial Calculator
The Factorial Calculator is a mathematical tool designed to compute the factorial of a non-negative integer. The factorial of a number n, denoted as n!, is the product of all positive integers less than or equal to n.
How to Use?
- Enter a non-negative integer in the input field.
- The calculator will automatically display the factorial result.
- For large numbers, the result may be displayed in scientific notation or as a very long integer.
Features
- Instant Calculation: Get results immediately as you type.
- Large Number Support: Handles calculations for larger integers.
- Input Validation: Prevents invalid inputs like negative numbers.
- Copy to Clipboard: Easily copy the result for use elsewhere.
FAQ
What is a Factorial?
In mathematics, the factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n. For example, 5! = 5 × 4 × 3 × 2 × 1 = 120.
What is the factorial of 0?
By definition, the factorial of 0 is 1 (0! = 1).
Can I calculate the factorial of a negative number?
No, factorials are only defined for non-negative integers. This calculator will not accept negative inputs.
What are factorials used for?
Factorials are commonly used in combinatorics, probability theory, and algebra to calculate permutations and combinations.