Since Nov 7, 2001

view home page, enter name:
Interesting factoid #1: (provided on 03/29/2005 11:17:04 PM EST by murdoog)

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:


The next number is 95, which is a composite. (The proof of which is left as an exercise).

Another wrote to me in FReepmail:

I thought it might be referencing “Black ‘47” the worst year of the ‘Famine”. Actually, the worst year of the genocide!

FourtySeven remains an enigma! Well maybe not so much...

I also like to chat occasionally on Paltalk where I am known as Fact Checker