Pepi II is often mentioned as the longest reigning monarch in history, due to a 3rd-century BC account of Ancient Egypt by
Manetho, which accords the king a reign of 94 years; this has, however, been disputed by some Egyptologists such as Hans Goedicke and
Michel Baud due to the absence of attested dates known for Pepi II after his 31st count (Year 62 or 63 if biennial count starting in Year 1 or 2). Ancient sources upon which Manetho's estimate is based are long lost, and could have resulted from a misreading on Manetho's behalf (see von Beckerath). The
Turin canon attributes 90+ [X] years of reign to Pepi II, but this document dates to the time of
Ramesses II, 1,000 years after Pepi II's death and its accuracy is uncertain. Spalinger (1994) provides the highest attested date "Year after the 31st Count, 1st Month of Shemu, day 20" from Hatnub graffito No.7, which assuming a biennial cattle count system would represent 62+1 complete or partial years. Therefore, some Egyptologists suggest instead that Pepi II reigned no more than 64 years. This is based on the complete absence of higher attested dates for Pepi beyond his Year after the 31st Count (Year 62 on a biannual cattle count). A previous suggestion by Hans Goedicke that the Year of the 33rd Count appears for Pepi II in a royal decree for the mortuary cult of Queen Udjebten was withdrawn by Goedicke himself in 1988 in favour of a reading of "the Year of the 24th Count" instead. Other scholars note that the lack of contemporary sources dated after his 62nd year on the throne does not preclude a much longer reign, in particular since the end of Pepi II's reign was marked by a sharp decline in the fortunes of the Old Kingdom pharaohs who succeeded him. The American
Historian,
David Henige, states while there have been examples of kinglists where rulers were ascribed reigns as long as that assigned to Pepi II, "often exceeding 100 years, but these are invariably rejected as mythical", the problems inherent in dating Pepi II's reign are many since:...a hyperextended duration [for Pepi II's reign] is not really necessary to bring Old Kingdom chronology into some equilibrium with other chronologies. For Mesopotamia from at least this early until virtually the Persian conquest, numerous localized synchronisms play vital roles in absolute dating, but seldom affect the duration of individual dynasties. Not only is Old Kingdom Egypt well outside any "synchronism zone" but, as it happens, since Pepy [II] was the last substantive ruler of Egypt before a period of political and chronological chaos...there are no awkward ramifying effects by reducing his reign by twenty or thirty years, a period that can simply be added on to the First Intermediate Period.Henige himself is somewhat skeptical of the 94 year figure assigned to Pepi II and follows
Naguib Kanawati's 2003 suggestion that this king's reign was most probably much shorter than 94 years. This situation could have produced a succession crisis and led to a stagnation of the administration, centered on an absolute yet aging ruler who was not replaced because of his perceived divine status. A later, yet better documented, example of this type of problem is the case of the long reigning
Nineteenth Dynasty pharaoh
Ramesses II and his successors. It has been proposed that the
4.2 kiloyear event be linked to the collapse of the
Old Kingdom in
Egypt, though current resolution of evidence is not sufficient to make an assertion. ==The Ipuwer Papyrus==