Genesis 5:31 KJV
And all the days of Lamech were seven hundred seventy and seven years: and he died.
Genesis 5:31, King James Version
In context
30 And Lamech lived after he begat Noah five hundred ninety and five years, and begat sons and daughters:
31 And all the days of Lamech were seven hundred seventy and seven years: and he died.
32 And Noah was five hundred years old: and Noah begat Shem, Ham, and Japheth.