This chapter of Genesis gives us the generations of Adam. I include it here only because it gives information on the longevity of the first characters.
Genesis Chapter 5
1This [is] the book of the generations of Adam. In the day that God created man, in the likeness of God made he him;
2Male and female created he them; and blessed them, and called their name Adam, in the day when they were created.
So Eve was technically called by Adam's name? I imagine this is part of the whole "dominion" thing.
3And Adam lived an hundred and thirty years, and begat [a son] in his own likeness, after his image; and called his name Seth:
4And the days of Adam after he had begotten Seth were eight hundred years: and he begat sons and daughters:
5And all the days that Adam lived were nine hundred and thirty years: and he died.
6And Seth lived an hundred and five years, and begat Enos:
7And Seth lived after he begat Enos eight hundred and seven years, and begat sons and daughters:
8And all the days of Seth were nine hundred and twelve years: and he died.
9And Enos lived ninety years, and begat Cainan:
10And Enos lived after he begat Cainan eight hundred and fifteen years, and begat sons and daughters:
11And all the days of Enos were nine hundred and five years: and he died.
12And Cainan lived seventy years, and begat Mahalaleel:
13And Cainan lived after he begat Mahalaleel eight hundred and forty years, and begat sons and daughters:
14And all the days of Cainan were nine hundred and ten years: and he died.
15And Mahalaleel lived sixty and five years, and begat Jared:
16And Mahalaleel lived after he begat Jared eight hundred and thirty years, and begat sons and daughters:
17And all the days of Mahalaleel were eight hundred ninety and five years: and he died.
18And Jared lived an hundred sixty and two years, and he begat Enoch:
19And Jared lived after he begat Enoch eight hundred years, and begat sons and daughters:
20And all the days of Jared were nine hundred sixty and two years: and he died.
21And Enoch lived sixty and five years, and begat Methuselah:
22And Enoch walked with God after he begat Methuselah three hundred years, and begat sons and daughters:
23And all the days of Enoch were three hundred sixty and five years:
24And Enoch walked with God: and he [was] not; for God took him.
Is walking with God a metaphor for death or was this supposed to be the first ascension into heaven? A google search shows that we will be hearing more about Enoch and his non-corporeal death in a later book.
25And Methuselah lived an hundred eighty and seven years, and begat Lamech:
26And Methuselah lived after he begat Lamech seven hundred eighty and two years, and begat sons and daughters:
27And all the days of Methuselah were nine hundred sixty and nine years: and he died.
28And Lamech lived an hundred eighty and two years, and begat a son:
29And he called his name Noah, saying, This [same] shall comfort us concerning our work and toil of our hands, because of the ground which the LORD hath cursed.
30And Lamech lived after he begat Noah five hundred ninety and five years, and begat sons and daughters:
31And all the days of Lamech were seven hundred seventy and seven years: and he died.
32And Noah was five hundred years old: and Noah begat Shem, Ham, and Japheth.
In order for Lamech and Methuselah to reach old age the flood would've had to happen when Noah was 600 years old. Either that, or they would need to be on the Arc. We'll have to see what the flood story says.