Minimum Viable Size for a Black Hole?

[halfeye]

Yeah, the lifetime of a black hole before it evaporates due to Hawking radiation scales with the cube of its mass, so something definitely not right there.

I made a mistake. I thouight the "time to singularity" was the time to evaporation. It seems what that means is the time from the event horizon to the singularity in the centre, in whatever way you might want to measure that with all the time dilation going on.

The "lifetime" parameter is much more well behaved, double mass gives us 8.00003 seconds lifetime. Cubed, more or less, as you said.

https://www.vttoth.com/CMS/physics-n...ion-calculator