Homeopathic potency re:how much original substance left?

Question

At what potency (X and C) of a homoeopathic remedy is there no longer any molecule of the original substance in the remedy?

At my calculation a 6x remedy will have something minute like half a microgram per tablet, but I'm wondering what dose absolutely nothing is left in there.

Please do not post answers like "homeopathics dont work" or "it doesnt matter how much substance is left its the vibration that counts...", that's not what I'm asking :) thankyou :)

Answer 1

A 13C corresponds to Avogadro's number (1 times 10 to the 26th power) in dilution, where there is no mathematical possibility of there being a single molecule of the original substance. (each C represents a 1/100 dilution of the previous 1/100 dilution)

A 30C preparation corresponds to a dilution of 1 part in all the atoms in the known universe