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# What's the largest number you can come up with?

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### #21Luckless  Crossbones+   -  Reputation: 2002

Posted 28 July 2011 - 02:43 PM

The largest valid response in this thread, +1.

Unless you're acknowledging that your response will not be valid. Because if yours is valid, then you will have to add 1 ad infinitum.

Only if you insist on looping over this for no reason.

Run through the thread and find the largest valid response. (It isn't mine to start with, because "The largest Valid Response in this Thread" is not, by itself, a number.) Take that value, add 1.

Operation complete, there is no reason to repeat the procedure.
If your signature on a web forum takes up more space than your average post, then you are doing things wrong.

### #22sooner123  Members   -  Reputation: 256

Posted 28 July 2011 - 02:58 PM

The largest valid response in this thread, +1.

Unless you're acknowledging that your response will not be valid. Because if yours is valid, then you will have to add 1 ad infinitum.

Only if you insist on looping over this for no reason.

Run through the thread and find the largest valid response. (It isn't mine to start with, because "The largest Valid Response in this Thread" is not, by itself, a number.) Take that value, add 1.

Operation complete, there is no reason to repeat the procedure.

Sorry. You're just wrong.

rip-off did it correctly.

It's not about amount of loops. If you "loop through" once or twice or any amount of times, at the end, yours will then be the largest value in the thread, yet it was defined as the largest value in the thread + 1, and doesn't satisfy its own definition.

### #23Luckless  Crossbones+   -  Reputation: 2002

Posted 28 July 2011 - 04:35 PM

Seriously? "Just wrong", based on what?

Make a list of numbers from 1 to 10.
Find the largest and add 1 to it.
Append new value to the end of the list.
If your signature on a web forum takes up more space than your average post, then you are doing things wrong.

### #24speciesUnknown  Members   -  Reputation: 527

Posted 28 July 2011 - 04:45 PM

I've never use BigInteger or any of the equivilants in any language, so my answer is 2^64. If I need a number bigger than that, I probably wont be displaying it without exponents, and so will not be able to "see" the number, let alone give it a name.

I did once implement an infinite-length integer calculator program in pascal, in college, as a programming assignment. But, I never bothered to test it beyond 50 digits, and I cant remember any of those numbers.
Don't thank me, thank the moon's gravitation pull! Post in My Journal and help me to not procrastinate!

### #25sooner123  Members   -  Reputation: 256

Posted 28 July 2011 - 05:24 PM

I've never use BigInteger or any of the equivilants in any language, so my answer is 2^64. If I need a number bigger than that, I probably wont be displaying it without exponents, and so will not be able to "see" the number, let alone give it a name.

I did once implement an infinite-length integer calculator program in pascal, in college, as a programming assignment. But, I never bothered to test it beyond 50 digits, and I cant remember any of those numbers.

You might mean 2^64 - 1

### #26ApochPiQ  Moderators   -  Reputation: 17224

Posted 28 July 2011 - 06:31 PM

10.

(This is a deep ArenaNet inside joke. Sorry.)
Maker of Machinery

### #27Hodgman  Moderators   -  Reputation: 36552

Posted 28 July 2011 - 06:32 PM

cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

### #28sooner123  Members   -  Reputation: 256

Posted 28 July 2011 - 07:04 PM

Seriously? "Just wrong", based on what?

I explained why you were wrong after I said "just wrong"

I didn't, as you imply, stop at that and not attempt to explain.

Make a list of numbers from 1 to 10.
Find the largest and add 1 to it.
Append new value to the end of the list.

This wasn't what you said and it wasn't the prompt.

You said: "largest valid response in thread" + 1.

If this generated a valid response, it would not be "largest valid response in thread" + 1. it would only be "largest valid response in thread"

if it generated an invalid response, then it was invalid.

rip-off did it correctly. because he had the cleverness to omit his post from the calculation.

### #29Luckless  Crossbones+   -  Reputation: 2002

Posted 28 July 2011 - 07:44 PM

a = 1

a = a + 1

What is the value of a?

If you claim my answer is wrong, then the a = a + 1 would compute out to infinity.
If your signature on a web forum takes up more space than your average post, then you are doing things wrong.

### #30Hodgman  Moderators   -  Reputation: 36552

Posted 28 July 2011 - 07:54 PM

a = a + 1
[solve for a]

Mathematically speaking, isn't this statement false? Or it describes some kind of non-real number that's always greater than itself.
(yes, I know it's supposed to be a step of a procedure, not an equation....)

This is a maths topic, right?

Your 'make a list' post (which describes a procedure) isn't at all equivalent to your first post, which describes a paradoxical statement. Stop trolling.

### #31HappyCoder  Members   -  Reputation: 3020

Posted 28 July 2011 - 08:11 PM

10^(10^10)

### #32Oberon_Command  Crossbones+   -  Reputation: 2306

Posted 28 July 2011 - 08:38 PM

x∈ℝ: ∀i∈ℤ, i < x < ∞.

### #33sooner123  Members   -  Reputation: 256

Posted 28 July 2011 - 08:38 PM

a = 1

a = a + 1

What is the value of a?

If you claim mine answer is wrong, then the a = a + 1 would compute out to infinity.

... is this guy for real?

### #34Wan  Members   -  Reputation: 1366

Posted 29 July 2011 - 12:50 AM

### #35gavco98  Members   -  Reputation: 372

Posted 29 July 2011 - 01:54 AM

Dammit! I was just about to post that 1 Post too late
Gavin Coates
IT Engineer / Web Developer / Aviation Consultant

### #36sooner123  Members   -  Reputation: 256

Posted 29 July 2011 - 05:57 AM

I've discovered that it's a lot harder to keep a thread on topic than a classroom of ravenous snarling kids!

### #37ChurchSkiz  Members   -  Reputation: 474

Posted 29 July 2011 - 07:41 AM

I've discovered that it's a lot harder to keep a thread on topic than a classroom of ravenous snarling kids!

What were the kid responses?

### #38The_Neverending_Loop  Members   -  Reputation: 629

Posted 29 July 2011 - 08:43 AM

I've discovered that it's a lot harder to keep a thread on topic than a classroom of ravenous snarling kids!

We should start talking about pie!, anyone else like pie here? I like pie, my favorite flavory is cherry! whats yours?

### #39KanonBaum  Members   -  Reputation: 277

Posted 29 July 2011 - 09:26 AM

Blueberry pie all the way, son.
I'm that imaginary number in the parabola of life.

### #40sooner123  Members   -  Reputation: 256

Posted 29 July 2011 - 09:32 AM

Well keep in mind this is a class for gifted kids:
In the disqualified category:
I had a lot of "infinities, infinity+1's"
I had a "the product of everyone in the room's answers" which suffers from the self referential paradox

I had a couple googols. Even some googles. Can't blame them for thinking that's the spelling.

Had one kid fill up the entire paper with 9's.

Then one kid (who wants to be a mathematician) gave (as by far the winning answer):

fΓ_G(G)

He even defined the wainer and veblen hierarchies, and graham's number (and the definition for knuth's up-arrows)

Needless to say I was very impressed. Especially seeing how I had to do some pretty hefty research only to figure out what the feferman-schutte ordinal was and if it could actually be used in the diagonalization function.

One kid gave f(n) = (n!^n!)!, f^googol(googol). Not too shabby. Weaker than tetration though.

Had a "the number of electrons in the universe squared"

And one funny answer: "the amount of kilobytes that anyone will ever really need"

And of course the obligatory 42, twice.

got 40 digits of pi

the bulk of the answers were things like 10000000000000000000, trillion^trillion, stuff like that.

my favorite answer was: Zeno( 1 / (1 - .9 repeated))

one said, "the positive even integer for which goldbach fails" <- i'll admit this one is difficult. i ended up defending the ordinal answer against this one because he didn't give an escape case for if goldbach holds forever. also even if it does fail, this would be nonconstructive and therefore not really in the spirit of the exercise.

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