Mysterious Blackhole Numbers

Play with this app to explore the fact that some numbers have also black hole like attraction property.

Here only 2 numbers 123 & 153 are dealt with.

Just watch the output and explore the logic behind the mysterious black hole like attraction property of these 2 numbers.

Enter any random numeric string of digits (or random numeric string of digits whose digit sum is divisible by 3) and check that the output always converges to 123 or 153.(after some specific repetitive steps are performed on the entered string of digits)

This app is very useful for education purpose and mathematically oriented students.

This very useful and informative app is *ABSOLUTELY FREE*, *NO INAPP PURCHASES* and *NO ADD*.

If there is any error in the computation steps please give me feedback through email to fix the bug.

*** English speaking female voice support files may be downloaded and installed in your phone / device if it is not already installed or compatible.