A particle accelerator called Large Hadron Collider can accelerate protons to 14 TeV (tetraelectonvolts) (1TeV = 10^12eV) of energy. What is the relativistic mass of a proton that has total energy of 14 TeV? (express your answer in MeV/c^2)

Would I use E= M-relativistic *c^2?
And then to solve for M-relativistic I would get this:
M-relativistic = E/c^2

Also to convert 14 TeV into MeV would I get 1.4 x10^7 MeV?