Alulim
Alulim is the first king whose name appears on numerous versions of the Sumerian King List (SKL). He was succeeded by Alalngar. The SKL states that Alulim ruled for several millennia. The SKL lists him as the first king of both Eridu and Sumer. His name does not appear in any sources from the Early Dynastic Period itself and he is thus not generally considered a historical figure. The Uruk List of Kings and Sages pairs seven antediluvian kings each with his own "apkallu". An apkallu was a sage in Sumerian religion and/or literature. The first apkallu (Adapa) is  paired up with Alulim. Professor William Wolfgang Hallo of Yale University suggests an equivalence between Alulim and the Biblical patriarch Enosh (in the Sethite genealogy given in Genesis chapter five). Professor William H. Shea adds that Alulim may have been a contemporary of the Biblical figure Adam (the latter of which may have been based on Adapa). As Alulim was said to have ruled for several millennia, his reign can be reduced from 8 sars down to 8 years.