Y by superagh, centslordm, itslumi
Let
denotes the least natural such that
Find all naturals
such that
.
Proposed by Nicolás De la Hoz




Proposed by Nicolás De la Hoz
This post has been edited 3 times. Last edited by Al3jandro0000, Nov 18, 2020, 3:54 PM
Reason: Some clarifications
Reason: Some clarifications