The Secret Behind -1 Factorial

How to Take the Factorial of Any Number

|i Factorial| You Won't Believe The Outcome

Zero Factorial - Numberphile

Exploring The Impossible: 0^i

Can we have negative factorial?

7 factorials you probably didn't know

The Mystery Behind This Math Miracle

What is the Lambert W Function (Introduction )/ Part 1

The Most Controversial Number in Math

The Mystery Of The 0th Root

The Man Who Solved the World’s Most Famous Math Problem

Why is 0! = 1?

What is the factorial of -½?

The most beautiful equation in math, explained visually [Euler’s Formula]

Imaginary Numbers Are Real [Part 1: Introduction]

what is half factorial? (1/2)!=? via. Gamma function

The Riemann Hypothesis, Explained

Numbers too big to imagine

what is i factorial?

What Is The Factorial Of 1/2? SURPRISING (1/2)! = (√π)/2