Comments: Cf. also Cham. Gig. bešan-da, Kar. Tok. bexan, Bagv. Tlond. bešen. The Avar form nus < *bVns < *bišVnV- (cf. Andian forms). An old Andian loanword is PTsKh *bešon (Tsez., Gin. bišon, Khvarsh., Inkh. bešon).
[Gunz., Bezht. č̣iṭ 'hundred' is a curious case. It is obviously the result of folk-etymological analysis of Avar nus 'hundred' as 'knife' (in Avar there exists a homonymous nus 'knife' - of course, quite different etymologically). Since the Gunzib/Bezhta word for 'knife' is č̣iṭ, it obtained the additional meaning 'hundred' under Avar influence.]