View Compilation Error

0_0_30500042_22509.cpp: In function 'int PrimitiveRoot(int)':
0_0_30500042_22509.cpp:55:40: error: conversion from 'std::vector<int>' to non-scalar type 'std::vector<long long int>' requested
     vector<LL> fac = PrimeFactor(phi[x]);
                                        ^