x = 4, y = 8, rule = B3/S23 bo$obo$bobo$3bo$2bo$bo$bobo$2b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]]
The very long prodigal is a still life with 12 cells, and the 97th most common such still life according to Catagolue.