The great attractor is 10^16 solar masses which is 1.98892e+28 metric tons or 4.27235217517502710456214149139579349904e+38 tons of TNT
there's also 400 galaxies being pulled towards it. 1.1717460159507830572384659703329893766897849832e+46 x 400 = 4.6869841e+48 tons
With how fast galaxies move (1.3 million mph) if we put that into a KE calculator we get 1.89169572412507056214149139579349904397705544933078394e+53 tons of TNT
1.89169572412507056214149139579349904397705544933078394e+53+4.27235217517502710456214149139579349904e+38=1.89169572412507089169572e+53 Tons of TNT or 7.915 ExaFoe (4-A)