In other words, you're looking for an image that will print reasonably well at 10,425 pixels wide x 7,725 pixels long x approx 150 pixels per inch.
Purchase vector graphics from Adobe Stock Images. Purchased Stock assets will be saved to your CC Library.
Unlike raster images (photos), vectors are math-based and can be re-scaled up or down to whatever size you need without any loss in quality. Unfortunately, you cannot upscale pixel-based JPGs or PNGs without causing significant pixelation or blurriness (see screenshot).
Hope that helps.
Nancy O'Shea, Product User & Community Expert
Alt-Web Design & Publishing ~ Web : Print : Graphics : Media