CREATE TABLE table_56997 ("Episode" TEXT, "Air date" TEXT, "Rating" FLOAT, "Share" FLOAT, "18-49  ( Rating/Share ) " TEXT, "Viewers  ( m ) " FLOAT, "Rank  ( timeslot ) " TEXT)

what is the lowest viewers (m) when the share is more than 13?
SELECT MIN("Viewers (m)") FROM table_56997 WHERE "Share" > '13'
SELECT MIN("Viewers (m)") FROM "table_56997" WHERE "Share" > '13'