We are told that the earth is old, so other than that, we have no real facts
as to the actual age of the earth.
2 Peter 3:5-8 "For this they willingly are ignorant of, that by
the word of God the heavens were of old, and the earth standing out of the
water and in the water: Whereby the world that then was, being overflowed
with water, perished: But the heavens and the earth, which are now, by the
same word are kept in store, reserved unto fire against the day of judgment
and perdition of ungodly men. But, beloved, be not ignorant of this one
thing, that one day is with the Lord as a thousand years, and a thousand
years as one day."