Need to export a MP4 video in 1440 (width) x 2560 (high) - Portrait

Hello,

I need help to export a secuence on Adobe Premier Pro CS6.

I set up a custom secuence and i dont have any problem to work in it.

Size: 1444x2560 px Portrait

Now i need to export the secuence using thes final request

MP4 video

Size: 1444x2560 (portrait)

When i try to set up this in the media encoder, i can not do it. The maximun high i can get is 2304px...

is there a way i can export the video like i need it?

Thanks

Miguel