10¹⁶ phosphorus atoms/cm3 are introduced in Si. Assuming complete ionization, E_G,Si = 1.12 eV, Nc=3.2 x 10¹⁹(T/300)^1.5 cm−3 and Nv=1.8 x 10¹⁹ (T/300)^1.5 cm−3, k_BT=0.026 eV (at 300 K) and ni = 10¹⁰ /cm3 (at 300 K), find out electron concentration in the conduction band at 600 K. If your answer in the format a * 10¹⁶ , enter only a without units upto four significant digits.