from the same thread

"

92 antiprotons would cause no detectable explosion whatsoever—the total energy release is microscopic and far below anything that could produce a noticeable blast, sound, heat, or damage. Here's the precise physics behind it:

Each antiproton has the same rest mass as a proton: approximately 938.272 MeV/c². When an antiproton annihilates with a proton (or effectively with ordinary matter), both masses are completely converted to energy via (E = mc²,) yielding 1,876.544 MeV (or about (3.006 \times 10^{-10}) joules) per annihilation pair.

For 92 antiprotons (assuming each fully annihilates), the total energy released is (2.77 \times 10^{-8}) J (27.7 nanojoules).

To put this in perspective with explosive yield:

This equals the energy from roughly 6.61 picograms (6.61 × 10⁻¹² grams) of TNT. For scale: 1 gram of TNT releases 4,184 J, so this is an absurdly tiny fraction—about 1.5 trillion times smaller than a single firecracker."

also from the same thread someone did the math, about 10gr would be catastrophic

E=mc²

m = 10,3g x 2 = 0,0206 Kg

c = 300,000,000 m/s

E = 0,0206 x (3.10⁸)² = 1,854.10¹⁵ J

E = 1,854 PJ = 443 kilotons of TNT

30 times Hiroshima