An inverted $\mathrm{T}$-shaped concrete beam $\text{(B1)}$ in the figure, with centroidal axis $\mathrm{X}-\mathrm{X}$, is subjected to an effective prestressing force of $1000 \mathrm{kN}$ acting at the bottom kern point of the beam cross-section. Also consider an identical concrete beam $\text{(B}2)$ with the same grade of concrete but without any prestressing force.
The additional cracking moment (in $\mathrm{kN} . \mathrm{m}$ ) that can be carried by beam $\text{B}1$ in comparison to beam $\text{B}2$ is $\_\_\_\_\_\_\_$ (rounded off to the nearest integer).