Točno
1. lipnja 2015. 00:45 (9 godine, 9 mjeseci)
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Uvidimo da broj znamenaka nekog prirodnog broja
u nekom brojevnom sustavu baze
je 
gdje je
cijeli broj a
decimalni ostatak u intervalu 
vidljivo je da



Budući da je zbroj znamenaka prirodan broj, a
i
cijeli brojevi,
mora biti cijeli broj. Budući da
,
može biti
ili
.
Budući da
i
nisu potencije broja
,
pa
može biti samo
.








vidljivo je da





Budući da je zbroj znamenaka prirodan broj, a







Budući da







