object ID vs hash vs class object id

Question

I got confused between these three types of IDs, why python have 3 different id types? and what is the use of them?

class Person:

def init(self, name):

self.name=name

p1=Person("Allen")

print(p1)

print(id(p1))

print(hash(p1))

output:

<main.Person object at 0x000001AE10CC7FD0>

1847117774800

115444860925