Why is 2 a controversial number?

Question

I have heard people say 2 is not a prime number and some go as far to say that 2 is not a number all together. What is the meaning behind this? Have I been lied to my entire life?

Answer 1

There is no controversy.

 

2 is a prime number.

 

The definition of a prime number is a positive integer greater than 1

such that the only divisors of that number are 1 and itself.

 

It is the very first  in the list of 1000 prime numbers as shown in Wikipedia

https://en.wikipedia.org/wiki/List_of_prime_numbers

 

You hear people say a lot of things...

Doesn't mean it's true.