About 360.2879 PiB (about 405,648,192,073,033,340) (EDIT: Somewhere, someone lost precision, didn't calculate properly, or something. That's not a power of two.)

Post #1 was 2^0 = 1 Post #2 was 2^1 = 2 This is post #108 so... 2^107 = 162259276829213363391578010288128 (Reverse dividing worked so it is accurate)

this might sound odd, but when i multiplied 5192296858534827628530496329220096 by 2 in a calculator online (coz mine is too tiny), i got... 1.0384594e+34. did i do this wrong?

You didn't do it wrong, your calculator probably had a digit cap, so it basically converted your answer into another equation. I suggest using this equation: 2^113 2 = the number we are multiplying by ^ = to the power of 113 = your post number -1 (because post 1 was 2^0) If you use an infinite digit calculator that you find online this will be the most accurate answer. (your answer is 10384593717069655257060992658440192) or you can spend a few minutes figuring it out on mapper 20769187434139310514121985316880384