The Planck Mass is the mass of the smallest possible black hole, named after Max Planck, and it happens to be 10 quadrillion times larger than the aforementioned Bosons.

As much as we would probably like to believe this is a relic of the bygone past of science, it's not. Max Planck who was one of the greatest of his time, and anyone with a slight grasp of the field is very familiar with his contributions, such as the Planck Mass, is on record saying "the holiness of the unintelligible Godhead is conveyed by the holiness of symbols". Eventually, the references to the spiritual were replaced with the most mystical of the mundane properties: beauty.