The Sumerian King List

Now before we approach chapter 10 read this.

The Sumerian King List

Is dated by the scribe who wrote it in the reign of King Utukhegal of Erech (Uruk), which places it around 2125 B.C.

The Sumerian King List

1-39After the kingship descended from heaven, the kingship was in Eridug. In Eridug, Alulim became king; he ruled for 28800 years. Alaljar ruled for 36000 years. 2 kings; they ruled for 64800 years. Then Eridug fell and the kingship was taken to Bad-tibira. In Bad-tibira, En-men-lu-ana ruled for 43200 years. En-men-gal-ana ruled for 28800 years. Dumuzid, the shepherd, ruled for 36000 years. 3 kings; they ruled for 108000 years. Then Bad-tibira fell (?) and the kingship was taken to Larag. In Larag, En-sipad-zid-ana ruled for 28800 years.
1 king; he ruled for 28800 years. Then Larag fell (?) and the kingship was taken to Zimbir. In Zimbir, En-men-dur-ana became king; he ruled for 21000 years. 1 king; he ruled for 21000 years. Then Zimbir fell (?) and the kingship was taken to Curuppag. In Curuppag, Ubara-Tutu became king; he ruled for 18600 years. 1 king; he ruled for 18600 years. In 5 cities 8 kings; they ruled for 241200 years. Then the flood swept over."Total: Five Cities, eight kings, reigned 241,200 years.
"The FLOOD then swept over. After the Flood had swept over, and kingship had descended from heaven, Kish became the seat of Kingship. In Kish .... Total:
twenty-three kings, reigned 24,510 years, 3 months, 3 1/2 days. Kish was defeated; its kingship was carried off to Eanna."In Eanna, Meskiaggasher, the son of (the sun god) Utu reigned as En (Priest) and Lugal (King) 324 years--Meskiaggasher entered the sea, ascended the mountains. Enmerkar, the son of Meskiaggasher, the king of erech who had built Erech, reigned 420 years as king. Lugalbanda, the shepherd, reigned 1,200 years. Dumuzi the fisherman, whose city was Kua, reigned 100 years. Gilgamesh, whose father was a nomad (?) reigned 126 years. Urnungal, the son of Gilgamesh, reigned 30 years. Labasher reigned 9 years. Ennundaranna reigned 8 years. Meshede reigned 36 years. Melamanna reigned 6 years. Lugalkidul reigned 36 years. Total: twelve kings, reigned 2,130 years. Erech was defeated, its kingship was carried off to Ur...."

There are older fragments of copies known and also more recent ones where the list is continued. You will note after Gilgamesch the lengths of rule are believable.
Also some translations of different copies will identify Gilgamesch's father as either a spirit or a God.
This no doubt because of the sacred prostitution of the followers of Innana/Ishtar
Lets face it in the Ancient world if you were born out of wedlock you were not called a Bastard you were known as either a Demi God or the son of some god or other.