oh, yes, stories like the flood and such, those are just descended from the originals. I was thinking the Exodus stories, the patriarchs, stuff like that.
the patriarchs ages were derived from the Mesopotamian kings list, specifically the kings of Kish, this was some time after the Sumerians who had compiled that part of the list had moved on. The Hebrews again were creating their own cosmology by redacting the myths and claims of more powerful civilisations, what they didn't realise is that the Sumerians didn't use base 10 when recording the reign of kings,
heres my research on that
Kiš
name of King/listed reign/reign in sexagesimal years/reign in base 10 years/approx date/nationality of king
Ĝušur 1200 1200 20 3592bce Su
Kullassina-bēl 960 960 16 3572bce Su
Nanĝišlišma 670 670 11 3556bce Su
En-tara-ana 420 420 7 3545bce Su
Babum 300 300 5 3538bce Su
Puannum 840 840 14 3533bce Su
Kalibum 960 960 16 3519bce Su
Kalūmum 900 900 15 3503bce Su
Zuqāqīp 900 900 15 3488bce Su
Atab 600 600 10 3473bce Su
Mašda 840 840 14 3463bce Su
Arwium 720 720 12 3449bce Su
Etana, the shepherd 1500 1500 25 3437bce Su
Bali 410 410 6 1/2 3412bce Su
En-me-nuna 660 660 11 3406bce Su
Melem-Kiš 900 900 15 3395bce Su
Barsal-nuna 1200 1200 20 3380bce Su
Zamug 140 140 2 1/3 3360bce Su
Tizqār 305 305 5 3357bce Su
Ilku 900 900 15 3352bce Su
Iltasadum 1200 1200 20 3327bce Su
En-me-barage-si 900 900 15 3307bce Su
Aga 625 625 10 1/2 3292bce Su
so for example you can see the name Barsal-nuna who reigned for 1200 years in the sumerian number system, whos reign in our base 10 was 20 years, with the sumerians counting 1 years base 10 as 60 in their system, so you have to divide the sumerian length by 60 (1200 divided by 60 = 20)
the Hebrews reading this when it was written using the same numerical symbols as were currently being used by the babylonians didn't know this, likewise up until fairly recently Sumerologists* didn't know this, but as you can see from the figures above, its quite easily proven.
What do you think a fledgling culture would claim for the ages of their long dead patriarchs, on encountering a list that said the kings of the most important culture they had ever known had lived for hundreds of years
* this gap in knowledge was responsible for some really crazy crapola, but isn't it always
