Rs=GMc2R_{s}=\frac{G M}{c^{2}}Rs=c2GM
Rs=2GMc2R_{s}=\frac{2 G M}{c^{2}}Rs=c22GM
Rs=2c2GMR_{s}=\frac{2 c^{2}}{G M}Rs=GM2c2
Rs=2GMcR_{s}=\frac{2 G M}{c}Rs=c2GM