The temperature of a perfect black body is 1000K and its area is 0.1  $m^2$. If  $\sigma =5.67\times {10}^{-8}W{m}^{-2}{K}^{-4}$, then the heat radiated by it in 1 minute is __________ $\times {10}^{4}J$.

[Round-off to the nearest integer]