A solid massless cylindrical member of $50 \mathrm{~mm}$ diameter is rigidly attached at one end, and is subjected to an axial force $P=100 \mathrm{kN}$ and a torque $T=600 \mathrm{~N}$. $\mathrm{m}$ at the other end as shown. Assume that the axis of the cylinder is normal to the support. Considering distortion energy theory with allowable yield stress as $300$ $\mathrm{MPa}$, the factor of safety in the design is ________ (rounded off to $1$ decimal place).