1290 x 40000
1290 x 40000 = 51600000
Example of 1290 x 40000 pixels banner dimensions.
1240 x 40050 1250 x 40040 1260 x 40030 1270 x 40020 1280 x 40010
1290 x 39950 1290 x 39960 1290 x 39970 1290 x 39980 1290 x 39990
1290 x 40050 1290 x 40040 1290 x 40030 1290 x 40020 1290 x 40010