2^4023-2^2684+2^1343-1344
100000000000000000000000000000
- 100000000000000000000
011111111100000000000000000000
+ 10000000000000
011111111100000010000000000000
- 1
011111111100000011111111111111
- 10100111111
011111111100000011101011000000 = 4023-2684+1343-8