# Are all simple finite groups unique? [duplicate]

I have studied simple groups of order $60$ and $168$. Specifically, I learned two things below:

1. All simple group of order $60$ are isomorphic to each other.

2. All simple group of order $168$ are isomorphic to each other.

Natural question arises from these facts. For a given order, are simple groups isomorphic? Thank you in advance.