The Genesis (first part of the bible) contains a timeline from Adam and forward, which put the flood 1429 years after the creation of earth. Going with the literal interpretation of course.

It goes down to Moses IIRC but gets more annoying to keep track on the exact years fairly soon after the flood.

Abraham is born 292 years after the flood. Stopped counting because it's get really hard to keep track, but Moses should be something like 200 years later.

There's multiple bible versions on the net nowadays.

Slam on historical sources (aka written sources) and if they counter with thier total age, point out that the tower of Babel is post flood and none seems to have noticed the flood (that wiped out 99.999% of the human population or something) in historical time...

Can be worth noticing that Noah's grandfather died the same year of the flood and that Noah doesn't seem to have cared one bit about the drowning of his brothers and sisters.