 One of the Abusir papyri was found to be dated to the " Year of the 22nd Count , IV Akhet 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 Manetho 's 44 @-@ year figure credited to Tancherês , the Hellenized name of Djedkare , although this may just be coincidental . 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 . 
 One of the Abusir papyri was found to be dated to the " Year of the 22nd Count , IV Akhet day 12 " , constituting Djedkare <a href='null_genetive' title='1'><mark>'s</mark></a>latest known date . This date might correspond to any time from the 32nd year of Djedkare <a href='null_genetive' title='2'><mark>'s</mark></a>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 <a href='drop_aux' title='3'><mark>is</mark></a>close to Manetho <a href='null_genetive' title='4'><mark>'s</mark></a>44 @-@ year figure credited to Tancherês , the Hellenized name of Djedkare , although this may just be coincidental . Modern estimates thus put Djedkare <a href='null_genetive' title='5'><mark>'s</mark></a>reign length as certainly more than 33 years and , if the cattle count<a href='been_done' title='6'><mark></mark></a> was regularly biennial , at least 42 to 44 years . This <a href='uninflect' title='7'><mark>makes</mark></a> Djedkare the longest reigning king of the Fifth Dynasty . 
One of da Abusir papyri was found to b dated to tda" Year of the 22nd Count , IV Akhet day 12 " , constituting Djedkare  latest known date . This date might correspond to any time from the 32nd year of Djedkare  reign up to his 44th year on the throne , depending on whether thdaattle count was once every two years or once every year and a half . Thedagher estimate close to Manetho  44 @-@ year figure credited to Tancherês , the dalenized name of Djedkare , although dis may jus be coincidental . Modern estimates thus put Djedkare  reign length as certainly more than 33 yrs and , if the cattle count done was regularly biennial , at least 42 to 44 yeyrs Tdismake Djedkare the ldaest reigning king of the Fifth Dynasty .