h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

As mentioned here... F64903?thread=313710
Not my idea but I've decided to stick it on here, and I don't know if there's now an entry on that or not... I'm too lazy to look, I'll just trust that post. I don't really know very much about them anyway

Is there any point when it's already well covered, eg, http://mathworld.wolfram.com/PerfectNumber.html? Maybe that's me showing bad attitude. I mean, why not just cross reference the existing resources publicly available through google? Time to I reckon.

wally

Yes, there's a point, because it's not covered here on h2g2...

It wasn't my idea, I hardly know anything on the subject, just no one else put it on here so I did.
And I didn't try to find out anything about whether it was easy to find or anything.
And looking for it with google partly escapes the point of the guide doesn't it?

Cut and paste job then. Change the odd word or two here and there. Should do the tick. Jobs a good un. Leave it to me.

>>>>"Cut and paste job then. Change the odd word or two here and there. Should do the tick. Jobs a good un. Leave it to me."

No, no, no!!!

The h2g2 House Rules state that: "You agree to only post materials to which you have the copyright or other permission to distribute electronically. You may not violate, plagiarise, or infringe on the rights of third parties including copyright, trademark, trade secret, privacy, personal, publicity, or proprietary rights"

The BBCi Terms and Condidtions state: "by submitting your contribution to BBCi, you warrant that your contribution is your own original work and that you have the right to make it available to the BBC for all the purposes specified above"

See also <./>HouseRules-Copyright</.>.

Hear Hear or is that Here here?

Yes.

but if its only 1 0r 2 words from each place its not really plagiarism, and if you change the words a bit...

I could write an entry on Perfect Numbers. It's not really a very interesting topic, in my opinion, but there are some unsolved puzzles there. I'll see what I can come up with.

That's unless someone else is already working on it.

Unlike primes they get big rather quickly - which limits the sort of people who play with them.

My entry is starting to take shape at A2097632.

The other form of the equation (which looks nicer aesthetically because of some symmetry in expression) is:
(2^p - 1) x 2^(p-1)
It emphasises a different prime aspect than the M version.

True, but I wanted to highlight the Mersenne Primes, so that I can link to the Mersenne Number entry A670051.

The entry on Perfect Numbers is now completed and picked. The Recommended version, which will become the Edited version, is at A2136070.

Good job!

Editorial Note: This conversation has been moved from 'Challenge h2g2' to 'Perfect Numbers'.