The exact duration of the reign of Imyremeshaw is mostly lost in a lacuna of the Turin canon and cannot be recovered, except for the end: "" 4 days"". Ryholt proposes that the combined reigns of Imyremeshaw and his two successors Sehetepkare Intef and Seth Meribre amount to about 10 years. Another piece of evidence concerning the reign of Imyremeshaw is found in the 13th Dynasty Papyrus Boulaq 18 which reports, among other things, the composition of a royal family comprising ten king's sisters, an unspecified number of king's brothers, three daughters of the king, a son named Redienef and a queen named Aya. Even though the king's name is lost in a lacuna, Ryholt's analysis of the papyrus only leaves Imyremeshaw and Sehetepkare Intef as possibilities. This is significant because the papyrus reports a year 3 and a year 5 dates for this king. Additionally, a date "regnal year 5, 3rd month of Shemu, 18th day" is known from the unfinished pyramid complex neighboring that of Khendjer known as Southern South Saqqara pyramid, which may thus have been built by the same person, perhaps Imyremeshaw.