Magic Numbers in nuclear physics refer to the numbers of protons or neutrons that result in particularly stable atomic nuclei. These numbers correspond to filled shells in the nuclear shell model, similar to the electron shells in atomic physics.

Here's a list of the first few magic numbers:

* 2

* 8

* 20

* 28

* 50

* 82

* 126

Nuclei with magic numbers of both protons and neutrons are called doubly magic and are exceptionally stable.