Per m:Requests_for_comment/numerals_in_Wikipedia_main_portal, it is requested that the project portals use Eastern Arabic numerals in situations where the language context is Persian, eg "۷۴۵٬۳۰۳ مقاله" instead of "745,303 مقاله". (Preferably unmangled by ltr :) )
(It might be also worthwhile to use number.toLocaleString() in general on the portal, so that all languages have localized numbers appropriately formatted, including, eg, appropriate comma placement for certain Indian languages, etc.)