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HP42S Mini-Challenge : HP17B(II) solution



#2

I know it's a bit late but here is a solution for the HP17B(II) (hardware clone of the HP42s) :

P=sigma(I:999999:316228:-11:IF(IP(I×I÷1E6)=sigma(J:1:5:1:IP(MOD(I×I÷10^J:10))×10^(5-J)):I×I:0))

365 bytes (variables included) and 3m30 with EMU42 on 1,5Ghz Centrino


#3

Finger check, here is the good one :

P=sigma(I:999999:316228:-11:IF(IP(I×I÷1E6)=sigma(J:0:5:1:IP(MOD(I×I÷10^J:10))×10^(5-J)):I×I:0))


#4

Best regards from V.


#5

Estimated time on a real HP17BII = 8 hours 30 min. Unfortunately it can't go out of the loop once the solution found...


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