write a program to input a number and check if the number is prime or not

Answer 1

Checking prime or not is very basic coding specially in python 😀
I think you should attempt it by yourself
But for help you can see this

https://code.sololearn.com/cPDD3i44SXVa/?ref=app
https://code.sololearn.com/c6Wbmle0X7O2/?ref=app

Answer 2

Why?

Answer 3

Logic:-
Any prime number is of the form:-

6n + 1

Where n is any natural number.