The program is same with:
> Add clipboard to sort your find number history.
> Add judgment: enter number must >= 2, or illegal, and you must re-enter.
> Corrected result display format.
Enter a number,
and the program will tell you what is or isn't a prime.
> Considering your phone performance, recommanded you should enter less than 11 digits number.
> Cause using regex will let progress slower (very slow!), so enter number of zero at the beginning is legal. (But result will correct it.)
Rate and review within the app in the Community section.