Heap o' Links Sun Sep 22, 2024

I saw a video today that was something new to me about a math problem/game/I don't know what called 'Kaprekar's constant'. It involves the number 6174, 'a perfect number'. If you take any number with four digits not the same, and rearrange them so you have the largest number (7641) and the smallest number (1467). If you subtract the smaller from the larger, up to 7 iterations later, you will get 6174 (= 7641 - 1467) and go no further. No one knows why. I find stuff like this interesting, a window into how a human mind can work.