NX does not recognize this as a valid part file so you won't be able to open it in any version. Although it has a .prt extention, it either was never an NX part file, or somehow became corrupt and is missing the necessary information for NX to open it.
Generally speaking, any version of NX should be able to open a part last saved in any previous versions going back to Unigraphics.
Maybe it's Pro/e or SDRC Ideas?
They both use the .prt extension.
Or maybe CadKey?
Elmhirst Industries, Specializing in Prototype sheet metal stampings and assemblies
Production: NX 12.0.2 / Autoform r8 /WorkNC 2019 r1
PC: Rave Cadbeast: Intel(R) i7-4790K CPU @ 4.GHz /32gb ram /NVIDIA Quadro P2000 on Win10 Pro