Editing Ahnentafel (section)

===Second method===
Write down the digit "1", which represents the subject, then from left to right write "0" for each father and "1" for each mother in the relation, ending with the ancestor of interest. The result will be the [[Binary numeral system|binary]] representation of the ancestor's ahnentafel number. Then convert the binary number to decimal form. Using the Sophia example:

:Sophia = Peter's mother's mother's father's father's father's mother's father's father's father's father's father's mother
:Sophia = 1110001000001
:1110001000001 = ['''1'''×4096] + ['''1'''×2048] + ['''1'''×1024] + ['''0'''×512] + ['''0'''×256] + ['''0'''×128] + ['''1'''×64] + ['''0'''×32] + ['''0'''×16] + ['''0'''×8] + ['''0'''×4] + ['''0'''×2] + ['''1'''×1]
:Sophia = 7233