What initial progenitor mass often leads to the formation of a black hole remnant?

Answer

Greater than 25 solar masses

If the initial mass of the progenitor star is greater than approximately 25 solar masses, the resulting core remnant is more likely to be massive enough to collapse completely into a black hole.

What initial progenitor mass often leads to the formation of a black hole remnant?
evolutionastronomystarsupernovaremnant