Challenge/Output factorial 1000!

Question

Task:
1)Input the number and output its factorial
2)The algorithm should be able to output a large factorial, such as 1000!
I think this is an interesting task, I want to see you decisions
My try: https://code.sololearn.com/cJk4ggvHx47k/?ref=app

Answer 1

https://code.sololearn.com/cd0jd7Ci57SZ/?ref=app