E=mc² Clan Forum

I want a living forum, so let's flood. In this topic, I post an enigma.
Just post your answer. Once checked, the person who found the correct answer give a new enigma to solve. And so on...

What is the next number? (this one is quite easy)

• 2011
• 4041
• 6091
• ?

Give your answer, and the logic you follow to find this answer.
Good Luck

These numbers are prime numbers ... but i'm too lazy for the moment to find the good sequence...

[edit]
hmmmm....4041 ... not a prime number... sorry for the wrong tip lol
[/edit]

I have on variant....maybe 666-the number of the beast?

boring enigma... I want to solve it now ! I can't work ... lol

Cynyx wrote:boring enigma... I want to solve it now ! I can't work ... lol

So what are u doing?
Злостный прогульщик

FougereDeGuerre wrote: What is the next number? (this one is quite easy)

My work team is now on the problem LOL

maybe 8161

i try : 9169

649846513518544148465102016414351306465546846512185101651215898795132123846106840646513213105154641351

maybe than 0111000101110001010101110101011110001

LoL, very nice idea those enigma

The correct answer isn't yet given, at least the one I imagined, but if you have a correct reasonment, your answer is maybe correct too for another one number seria...

Tor now, the answer who seem to nearly the right one is the one of fede: 8161. Has to be corrected, but nealy the good one.

(I don't have looked at the binary one, too lazy to convert it )

8111, 8121, 8131, 8141, 8151, 8171, 8181, 8191....8181?

None of those, sorry Federalic. It is one of the more easy serie I know... If I give you the reasonment of the serie, I 'm nearly certain you will never forgot it...

Like Apple, Think different. For each given number, don't see it like a number, but like a composition of numbers.

SYSTEM ALERT: FATAL ERROR
code:0x000DRUNKENMONKEY
discription: Federalic`s brain goes down.
reboot Federalic(Y/N)?:_

With your 8161, you nearly got it, i think that you have almost foud the logic under this serie, so i don't think you have to be rebooted

FougereDeGuerre wrote: so i don't think you have to be rebooted

ALL FILES WILL BE DELETED IN 3...2...1....
FORMAT MEMORY PROGRESS:100%...
BRAIN AUTOBURNING COMPLETE....
FEDERALIC NOW GOT NEW BABY`s BRAIN....
(stupid like a chair and uselles)...
REMOVING FOLDER "FEDERALIC"...complete...
DO U WANT TO CLEAN RECYCLE(Y/N)?:_

Ok, I give you the requested number. So, the enigma is now:

• 2011
• 4041
• 6091
• 80161
• ?

Maybe with this additionnal number you would be able to find the next one

haha Fede .... Fede is shutdown now... It's near 5.00 am at his home

So, i try an another answer...
100251

Yeah, you got it... Quite easy no?
1=> 1+1 & 1-1 & 1*1 & 1/1 =>2011
2=> 2+2 & 2-2 & 2*2 & 2/2 => 4041
...
Only the four basical mathematical operations

Give us your enigma Cynyx

no time for new enigma... I'm busy at work... Feel free to post one new. Thx

Ok, no problem, I know another enigma

This one is maybe more easy than the first one, I don't know how you think, so hard to determine...

• 1
• 11
• 21
• 1211
• ??
• ??

In my youth, I have readen the book "Les fourmis" from Bernard Weber so I know this eingma... I can't play for this one ...

Oh yes, if you read this, you know the answer... I read also some Werner book's (The trilogy "Les Fourmis" and "Les Thanatonautes")... I thinked that I can put the enigma given in those books, but it seems that I'm not the only one reading those books

the anwer is:

1
11
21
1211
111221
312211

You' ve got it...

Just post an enigma now

well.. i dont think you can solve them by just looking at them, so this is my excuse of not being able to solve them:).. But, still, I am crap at such things.. teach me, tell me, I wanna know:)..

If it is the logic used in the last enigma you want to know, it's only a simple thing:
Ask to a matematician to descrive the text:"1"
He would simply answer "one one". Repeat this process: "two ones", and so on...
So this serie is only a serie of comments of the text "1". This serie was founded by Conway, and has some properties. The most important, is that you would never found a 4 or a higher digit in this serie.

If you want more details, i think that google can give you more informations about this serie...

I see now:).. funny thing...

There is a perfect enigma for you.. It is worth 100000$.. give me a recurring formula for the next prime number:)...

The fews things that i remember of my curses of calculability and complextity is that this problem is "NP-complet". So, this is a class of problems that are nearly unsolvable with our computers, execpt for some of them who can be approached by another problem less complex. (those are only remembers, so I'm not totally sure of what i wrote...)

If you place yourself in the case of an unfinite memory and power, this problem seems quite easy to handle just explore each number, and verify if it exist one divider of this number. But in the reality of our computer, this is not so simple...

Of course, they exist some heuristic to say if a number is a prime one. I think there is one who can say if a number is prime, and thus, giving a number, by trying very few possibilities (i think about 256 number tested for a number on 60 bits) can give a prime number close of the one you give to the algorithm.

But this is not exactly a recurrent way of finding the next prime number...

But I'm not at all a theoritician about the prime theory, so I'm personnally unable to find that (and i think that it would be fine that I come back to my cursus to verify qhat i said, here, but I don't want to do it.

Maybe other members can earn those 100 000 $