Page "Khafra" Paragraph 23

The ancient Greek historians Diodor and Herodot instead depicted Khaefra as a heretic and cruel tyrant: They wrote that Khaefra ( whom they both called “ Khêphren ” in attempt to parody Khaefra ´ s name ) followed his father Khêops on the throne, after the megalomaniac and tyrantly ruler had died.

Then Herodot and Diodor say that Khaefra ruled for 56 years and that the Egyptians had to suffer under him like under his father before.

Since Khufu was said to have ruled for 50 years, the authors claim that the poor Egyptians had to suffer under both kings for altogether 106 years.