Posted by urnlfn on April 28, 2021, 6:54 pm, in reply to "Very likely true. I never liked these "undetectable" particles anyway."
The smallest primordial black hole that would still exist after 14 billion years, i.e. would not have evaporated via Hawking Radiation, would be around 0.0008 trillionths of a meter in diameter and have a mass around 270 million metric tonnes. Basically, a black hole of any size would do.
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- DFM April 28, 2021, 7:20 am
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