7 ms·

Some related references: http://mathworld.wolfram.com/KaprekarRoutine.html http://mathworld.wolfram.com/KaprekarRoutine.html http://en.wikipedia.org/wiki/6174

by clvv 15y ago

Some related references: http://mathworld.wolfram.com/KaprekarRoutine.html http://mathworld.wolfram.com/KaprekarRoutine.html http://en.wikipedia.org/wiki/6174_(number) http://en.wikipedia.org/wiki/6174_(number) The Wolfram link contains a list of Kaprekar numbers and Kaprekar sequences in common bases.