iPhone What is the required resolution for a parallax wallpaper for the iPhone 4s?

[FatPuppy]

I can't find it on web, I have this wallpaper with 740X1196 and I want to know if this is the standard resolution for the 4S

 

[firedept]

I can't find it on web, I have this wallpaper with 740X1196 and I want to know if this is the standard resolution for the 4S

From what I have researched on the subject, the optimum size on the 4s for parallax wallpapers is 1040 x 1360.