Za koje najmanje prirodne brojeve

i

vrijedi:

? Upiši u formatu x,z
For which smallest natural numbers

and

does the equation

hold? Enter in the format x,z.
[lang=hr]
Za koje najmanje prirodne brojeve $x$ i $z$ vrijedi: $104_x = 404_z$ ? Upiši u formatu x,z
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[lang=en]
For which smallest natural numbers $x$ and $z$ does the equation $104_x = 404_z$ hold? Enter in the format x,z.
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