also: うん
some; a certain; umpteen
Used as a placeholder for an unspecified digit or number, often in casual or colloquial expressions. Common in patterns like ン十万円 (some hundreds of thousands of yen) or 50ン歳 (fifty-something years old).
That car apparently costs some millions of yen.
He looks around fifty-something years old.
I heard he's in his fifties, though exactly how old isn't clear.
That watch apparently costs several hundred thousand yen.
That was already several decades ago.