When was Abram from the Old Testament born?

Answer 1

According to the Torah and Talmud chronology, he was born 3823 years ago.

Another Answer:

Answers are first in 'anno mundus (yr of the world) and then converted.

The Flood came in 1656 AM, in Noah's 600th year (Genesis 7:11) and ended in 1657 AM, Noah's 601st year (8:13). The figure of 427 years between the Flood and the death of Terah is based on a count that takes "two years after the Flood" (Genesis 11:10) to mean "two years after the Flood began," not "two years after the Flood ended." This is consistent with normal biblical Hebrew reckoning of events, which marks the beginning of the event, not the ending of it. Thus Terah died in 2083 AM. Again, we are told in Genesis 12:4 that Abram was 75 years old when he left Haran for Canaan, while Acts 7:4 emphasizes that this was after his father's death. The presumption is that Abram's removal to Canaan was without delay after his father's death (as Stephen's phrasing directly implies: not merely "after" but "when" Abram's father was dead). Had it been as much as a calendar year later, the Hebrew Bible would've duly noted the fact. Thus Abram was born in 2008 AM.

Reading in Scripture that there were 24 years between Abram's departure from Haran at age 75 and God's covenant with him and his offspring at age 99 (Genesis 12:4; 17:1ff). This brings us to 2107 AM. A span of 430 years lies between that covenant and the giving of the Law of Moses at Sinai, bringing us to 2537 AM. Another span of 480 years brings us to the beginning of Solomon's work on the First Temple in 3017 AM, which is the same as 966 BC. Abram was born 1009 years (the difference between 2008 AM and 3017 AM) before then, which means he was born in 1975 BC.

According to the above reasoning, we can take 1975 BC and add 2011 AD to total 3986 years. But due to a calendar error omitting the year Zero, we must subtract 1 year, resulting in 3985 years ago for the birth of Abram.