How much work was done to lift a 1,000kg block to the top of the great pyramid, 146 meters?

Mass of the object = 1000 kg

height = 146

meter acceleration due to gravity = 9.8 m/s^2

but for easy calculation we will take acceleration due to gravity as

= 10 m/s^2

So for this,

W = 1000 x 10 x 146

W = 1460000 J

W = 1.46 x 10^6 J

answer is = 1.46 x 10^6J