Comment Comment by cousin_it > The result will be a smaller number which has the same mod-19 residue.It seems to me that the procedure works only for numbers divisible by 19. If it's not divisible, the residue may change. Try 20 for example. parent cousin_it 6 years ago
It seems to me that the procedure works only for numbers divisible by 19. If it's not divisible, the residue may change. Try 20 for example.