123 : 2 = 61 Rest 1 61 : 2 = 30 Rest 1 30 : 2 = 15 Rest 0 15 : 2 = 7 Rest 1 7 : 2 = 3 Rest 1 3 : 2 = 1 Rest 1 1 : 2 = 0 Rest 1 {\displaystyle {\begin{aligned}123&:2=\color {red}{61}&{\textrm {Rest}}~1\\\color {red}{61}&:2=\color {green}{30}&{\textrm {Rest}}~1\\\color {green}{30}&:2=\color {orange}{15}&{\textrm {Rest}}~0\\\color {orange}{15}&:2=\color {blue}{7}&{\textrm {Rest}}~1\\\color {blue}{7}&:2=\color {hotpink}{3}&{\textrm {Rest}}~1\\\color {hotpink}{3}&:2=\color {teal}{1}&{\textrm {Rest}}~1\\\color {teal}{1}&:2=0&{\textrm {Rest}}~1\\\end{aligned}}}
Die Reste ergeben von unten nach oben die Binärzahl 1111011 {\displaystyle 1111011} .