千せん番ばんせんばんMeanings1nounthousand timesUsed in set phrases like 千番に一番の兼合 (one chance in a thousand). Not commonly used as a standalone counter.See also: 千番に一番の兼ね合い「千せん番ばんに一いち番ばんの兼かね合あい」ということわざがある。Expressions千せん番ばんに一いち番ばんの兼かね合あいextremely difficult; a one-in-a-thousand chance