You are downloading the Factorial XAP file v1.0.1.0 for Windows Phone. Factorial is a free Education App: 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. The factorial. You can now download the offline XAP package file to install & try it.
Download Locations for Factorial 1.0.1.0 XAP file
What's New
v 1.0.1
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Package File
Please Click Here > to retrieve available package files for Factorial.
Please be aware that the Factorial XAP file you are to download is hosted on the Microsoft Store CDN server. You can read more about Factorial or get it on Microsoft Store.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Factorial XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.