What happens if you factorial -1 on different calculators?

0:00 - Title

Physical calculators
0:10 - Scientific calculator

Windows calculators
0:22 - Windows 3.1 Calculator
0:31 - Windows 95 Calculator
0:39 - Windows 98, 2000, ME, XP, Vista Calculator
0:47 - Windows 7, 8, 8.1 desktop Calculator
0:55 - Windows 8.1 Metro Calculator
1:04 - Windows 10 Calculator
1:13 - Windows 11 Calculator

Other OS calculators
1:20 - Mac Calculator
1:28 - GNOME Calculator
1:42 - KCalc
1:52 - galculator
2:00 - Deepin Calculator
2:10 - cgtkcalc
2:18 - MaXX Calculator
2:27 - Xcas
2:36 - Chrome OS Flex Calculator
2:45 - Android x86 Calculator
3:00 - ReactOS Calculator
3:08 - Visopsys Calculator

Phone calculators
3:18 - NOKIA Button Phone
3:39 - Old LG Android phone calculator
3:54 - Samsung Android Calculator
4:03 - Scientific Calculator Android App

Programming Languages
4:13 - Python

Spreadsheets
4:30 - Excel
4:39 - LibreOffice Calc
4:49 - WPS Spreadsheets
4:48 - ONLYOFFICE Spreadsheets
5:05 - Google Sheets

Other calculators
5:19 - Google Calculator
5:30 - Homemade Factorial Calculator

6:13 - Table
6:33 - End screen

Blind-accessible version:    • What happens if you factorial -1 on differ...  
Homemade_Factorial: https://github.com/StefanGrace/Homema...
Table: https://imgur.com/gUNkAvj


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