 One of the Abusir papyri was found to be dated to the " Year of the 22nd Count , IV <unk> day 12 " , constituting Djedkare 's latest known date . This date might correspond to any time from the 32nd year of Djedkare 's reign up to his 44th year on the throne , depending on whether the cattle count was once every two years or once every year and a half . The higher estimate is close to <unk> 's 44 @-@ year figure credited to Tancherês , the Hellenized name of Djedkare , although this may just be <unk> . Modern estimates thus put Djedkare 's reign length as certainly more than 33 years and , if the cattle count was regularly biennial , at least 42 to 44 years . This makes Djedkare the longest reigning king of the Fifth Dynasty . 
