FourtySeven
Since Nov 7, 2001
 

47 is an interesting number in it's on right. You can generate a sequence of primes by starting with 2, then multiplying each number by 2 and adding 1. 47 is the last prime in this sequence before you produce a composite number
Here's the sequence:
2,5,11,23,47
The next number is 95, which is a composite. (The proof of which is left as an exercise).
I also like to chat occasionally on Paltalk where I am known as Fact Checker