Calculator acting stupid

$y=2^{2160}\\ log\;y=log\;2^{2160}\\ log\;y=2160*log\;2\\ log\;y\approx 650.2247906\\ y\approx 10^{650.2247906}\\ y\approx 10^{650}*10^{0.2247906}\\ y\approx 1.677994759 \times10^{650}\\ 2^{2160} \approx 1.677994759 \times10^{650}\\ $