Primality - Prime Checker app for iPhone and iPad

4.2 ( 4862 ratings )

Utilities Education
Developer: Adan Ramirez

Free

Current version: 1.3, last update: 7 years ago
First release : 09 Dec 2014
App size: 2.6 Mb

The app checks if a number is prime, and if its not, it will give you all the numbers the number is divisible by. It will also tell you if the numbers that can divide it are prime or not.

Due to stability issues when figuring out if the divisible numbers are prime or not, the max number you can put is 99,999 now.