Factorial of 1 (1!)
RESULT: 1
The factorial of 1, written as 1!, is the product of all positive integers less than or equal to 1.
What Is the Formula to Calculate 1 Factorial?
The formula for calculating 1 factorial (1!) is:
1! = 1 = 1
How Many Digits in 1 Factorial?
The number 1! has 1 digits.
Factorial Table From 1! to 1!
| n | n! |
|---|---|
| 1 | 1 |
Frequently Asked Questions
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What is 1!?
It's the product of all positive integers from 1 to 1. Answer: 1.
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Is factorial defined for negative numbers?
No. Factorials are only defined for non-negative integers (0 and up).
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What is 0!?
By definition, the factorial of 0 is 1.