Cache #2
The cache is of course, not at the listed co-ordinates, but it is within 3K.
This is the original version of the puzzle as first conceived in my favourite thinking spot. The numbers you are given are the correct numbers for GZ co-ords, it's just a mater of getting them into the correct order. To do this you will need to use the hint.
317459483443874
It was thought that this would be too easy for GC7FZ7B My_Hard One , so a couple of twists were added. I would suggest untwisting the sort first.