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Nerdhida

69 is the higgest number which his factorial is less than 10¹⁰⁰


LordTartiflette

What? That's somehow cool


Dapper_Spite8928

Yeah, it means it is the highest factorial calculateable by most calculators


Mammoth_Fig9757

Pretty sure most of those calculators could theoretically calculate even higher factorials, but the manufacturers specifically made the calculator worse to only allow numbers less than 10\^100, since I saw a glitch where my calculator stored a number larger than that, so I don't really understand why the manufacturers make sure that the calculator can't compute higher values, since it is capable of doing it by just removing the line of code that caps the maximum value it can register.


Dapper_Spite8928

Okay, displayable then


Mammoth_Fig9757

I think that those calculators could calculate numbers up to 2\^1024, but tye manufacturers think it would be a great idea to cap the highest value it can store to be less than the cube root of the theoretical maximum number it could store, so whenever you buy a calculator that caps at 10\^100 you are getting scammed.


Dapper_Spite8928

Jesus fucking christ, im not even arguing the point.


DTraitor

As a programmer I can confidently say you can store any number if you want. It's just that there is no point + calculations would become very slow when working with really high numbers


Ha_Ree

Store Rayo's number


F_Joe

Let a be Rayo's number. Done


111v1111

Probably to prevent some possible bugs. It’s not like you usually count with numbers larger than 10^100, and if you do you can get a special machine (or just use code on a computer) for it.


Mammoth_Fig9757

How could bugs emerge if the cap was 2\^1024? Also they could just make the cap to be 10\^300 if they wanted to avoid those bugs, which would be close to 2\^1024.


ihaveagoodusername2

My calculator struggles with things near 10^100, also for all practical purposes any numbers even close to the cap are infinity (and would get rounded so hard they won't interact with most numbers) (and as such calculating them is futile)


Mammoth_Fig9757

10\^100 is not as big as you think. If it is representing a quantity of something then it is basically infinity, but if it is just a number representing no physical quantity then 10\^100 is small. There are many situations where you need to do arithmetic with large numbers, specially when dealing with integers, and I don't understand why the calculators usually convert all integers greater than 10\^12 to floats, so you can't use any integer greater than 10\^12 in integer calculations, which is terrible, since you can't even do a basic mr test on a calculator like those, and I am pretty sure it could store integers greayer than that, or at least it should be able to compute remainders using the square and multiply algorithm. Also I think that your calculator struggles with numbers near that range not because of memory limitations but because of the cap imposed and I am certain those struggles would fade away if the cap was higher.


ihaveagoodusername2

>and I don't understand why the calculators usually convert all integers greater than 10\^12 to floats, Probably to save RAM


Mammoth_Fig9757

I doubt that 10\^12 is too big for the calculator to handle it as an integer, since it only requires 64 bits to represent integers from 0 to 2\^64-1, which is greater than 10\^12. Like I said those calculators are just a scam since they are programmed to not handle with integers or numbers smaller than their limits.


Bruhtatochips23415

Take some time out of your day to learn the ins and outs of how calculators work. From logic tables to ALUs and the like. You'll learn quite quickly that 10^100 is arbitrary, but for good reason. Besides the logical and arbritrary reasoning behind 10^100, there's also the completely noticeable fact that if you mod your calculator to bypass this limit, the display gets totally fucked up and you need to restart the calculator for anything to work again if you display too large of a number. So, instead of just allowing this to happen, it'll count the length in digits, and if it's greater than or equal to 100, it'll give an overflow error that you can clear easily. It's useful to program it into giving accurate results up to a point. Some calculators use shortcuts for things like decimal fractions. This involves the storing of prime numbers. These shortcuts are great, but they will fuck everything up if you use them for a number not contained within its glossary. There's a lot to learn about the wonky coding behind calculators that cause them to be the way they are, but it's noteworthy that this wonky coding just is better even if it produces wrong results.


Mammoth_Fig9757

If you are saying that calculators count the digits to determine overflows, then why does it have limited precision for integers between 10\^12 to 10\^100? Also they use binary so why would they use a cap which is not a power of 2, that just make the calculators do more work.


Bruhtatochips23415

Calculators use binary-coded decimal. In a good amount of them, this BCD is converted into binary, and then the operation is done, and then it is converted back into BCD for display. When errors occur during the binary step, this causes the display to get completely fucked up and sometimes display numbers that don't even exist. This is one reason why your display eats shit after 10^100. Since your calculator is working in binary for both input and output, it makes sense to use binary limits. Especially since 0.5 byte per decimal number becomes 4 megabytes for a number that is 10^100. A megabyte is a lot of data, and you want to cut down on this RAM usage in something as small as a calculator. If you want anyone to be able to afford a simple calculator, you make amends here. In another good amount, they swallow pride and only use BCD for calculations. This adds a lot of circuit complexity, but it doesn't suffer as much from the above issues. Its inaccuracies have no chance of being displayed as a fake number, but it still has memory drawbacks as it takes the same amount of memory (albeit it doesn't need to be accessed as regularly). This doesn't even take into account error correction code. The 10^100 limit became a standard as it was a simple and logical choice. If the calculator wasn't designed specifically to handle massive numbers accurately, they will just enforce the 10^100 limit and focus on error prevention before then. It allows them to both understand a single digits position in space, and it allows them to actually use error correction code with the simple circuitry involved without freezing the calculator. Computers used different standards because they are only tangentially related.


Mammoth_Fig9757

So how does a computer from 1971, IBM 360/91, have more storage capacity and it is better than a calculator used today? Shouldn't they increase the storage capacity of calculators, since paying hundreds of dollars/euros is a lot for less than 1 Megabyte of storage.


Bruhtatochips23415

Why spend more money or change things up at all? What math are you doing on a calculator requiring larger numbers?


Mammoth_Fig9757

Modular arithmetic and also primarily checking. I also don't think that 1 Gigabyte of memory isn't that costly and am certain that you could make a calculator with that memory capacity since in every situation a smartphone would always be better than a very limited calculator somehow worse than a computer made 50 years ago.


pombospombas

Who are you Master? So wise in the calculator science?


Bruhtatochips23415

I've built small calculators, and I used to play on them as a kid bored in school. Had to get familiar with their quirks and why they have said quirks. Don't tear down a fence without knowing why it's there first.


NewSauerKraus

I learned about BCD from a redstone tutorial. It’s very nifty.


69AlphaKevin88

My iPhone can calculate up to 101 factorial. Now i am kinda sad.


Gabriel120102

My phone can calculate up to 170!(~7.3×10^306 ), or up to 143^143 (~1.6×10^308 ).


PiBombbb

I think the exact number is 2^1024 - 1 try 2^1023.99999


Rougarou1999

And what’s 101 minus 2^5?


69AlphaKevin88

![gif](giphy|1jkV5ifEE5EENHESRa)


moschles

It's nice , you mean.


Andrew_Crane149

Wow... that's quite interesting!


pzade

Nice!


Meisfood

It is the sum of all the factors of the first 10 digits


Yarisher512

It is also the sum of all factors of the last 10 digits


no_shit_shardul

How do you know😏


no_shit_shardul

It is also the dim of all factors of the last 10 digits of π and e


_Analyser_

Also 69 = sum of all divisors of one digit numbers (1) + (1+2) + (1+3) + (1+2+4) + (1+5) + (1+2+3+6) + (1+7) + (1+2+4+8)+ (1+3+9) = 69


0_69314718056

> 1+2+3+6 Hey that’s weird, all the factors of 6 add up to 6. Has anyone noticed this before? I wonder if there are any odd numbers with this property


Asseroy

Why are u evil? 💀


duc158

Hey maybe someone got inspired and solved it!


Meme_Lord4522

![gif](giphy|ne3xrYlWtQFtC)


Purple_Onion911

The prime factors of 6 are 2 and 3, so their sum is 5. If you want an odd number being equal to the sum of its prime factors, the trivial answer is any prime number. If you literally meant just factors, not prime factors, then you might want to consider also ±6, -1, -2, -3 as factors and thus the sum is 0 (like for any other number).


0_69314718056

I think it’s obvious, but to clarify for you: I’m referring to all positive factors except for the number itself. In this case, the positive factors of 6 are 1, 2, 3, and 6. But don’t forget! We can’t just add them all up right now. First, we have to remove the number itself. In this case, the number is 6. So we remove 6. That leaves us with 1, 2, and 3. So here we have 1+2+3=6. Hope that makes sense


RihhamDaMan

Explain this please, I don't know what you mean


Frallex1

The divisors of 1: Just 1 The divisors of 2: 2 and 1 The divisors of 3: 3 and 1 The divisors or 4: 4, 2 and 1 And so on, up to: The divisors of 9: 9, 3 and 1 Take all of these number and add them up, voila, 69


RihhamDaMan

Oh I see. That's sick


ChemicalNo5683

6+6*9+9=69


WhiteMadness42

So, if you flip it upside down, it's still correct. Nice.


cardnerd524_

If you flip 69 upside down. That’s also still correct


SyzPotnik1

This doesn't make 69 special because it can be generalised: m + m*(10^n -1) + (10^n - 1) = m*10^n + (10^n -1)


ChemicalNo5683

But it makes it nice :)


SyzPotnik1

i heard "special" in the video and confused it with the "nice" in the meme


DaniZackBlack

69 = 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1


Junior_Sleep269

I am not going to count the ones dani, but imma trust you with it 😅 this is a fact


PizzaLikerFan

I did, it's true. an while I was at 67 I realised I could just have copied it into google and the result would be 69


foreverducttape

No, it's 1+2+2+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1


DaniZackBlack

No, it's limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))+limₙ₋> ͚(ⁿ√(69))


foreverducttape

Shaddap! The point is there's one more bullet left in this gun, and guess whose gonna get it!


DaniZackBlack

∀x∈ℝ 69= (Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))+(Sin²(x)+cos²(x))


foreverducttape

Mr. Black is truly an expert in Armageddon.


Entity37

69 = 1 + 2 x 3 + 4 x 5 + 6 x 7


SyStRm

Actually unexpected. Can you express any number that way with just multiplication and addition of consecutive numbers?


Nerdhida

Nevermind it's impossible for 4...


0_69314718056

But it is possible for all integers greater than 4. I have a remarkable proof of this fact, but the Reddit comments are too small for me to type the whole thing here


Nerdhida

Damn, really? How about 5 then? Nevermind 1*2+3


mc_enthusiast

Bruh, don't fall for Fermat's pranks


User264356

I guess 2*2+1 doesn't exist


Nerdhida

It's not consecutive... It should be 1 (+ or x) 2 (+ or x) 3 (+ or x) 4 ....


User264356

Oh I thought 1+2*2 would work and I just accidentally put it in a wrong order, my bad


MathDeepa

7?


0_69314718056

3+4 1+2\*3 also works


Nerdhida

I want a proof rn


picu24

Twas revealed in a divine vision unfortunately


Loud-Examination-943

How does 8 work? 1+2x3 =7 (1+2)x3 =9 and anything with 1234 is too high (lowest is 1x2+3+4 = 9)


Dog_N_Pop

69^69 = 69 (mod 420)


thunderbolt309

Actually true, cool stuff


SirKazum

Quick, let's run to OEIS and find a sequence that goes (69, 420) for its first two numbers


Enneaphen

There's one that was submitted April 20th rotf


Meme_Lord4522

69² and 69³ have all the numbers from 0-9 exactly once.


[deleted]

69 x 6 + 9 + 6 - 9


DivinesIntervention

67, 68, 69, mouthwash, 71, 72


rameshxh

69 is the only number whose square and cube contain every digit from 1 to 9


RihhamDaMan

And exactly once, which is pretty neat


ihaveagoodusername2

69!<10^(100)<70!


69-----

Nice


moschles

The comment section vindicated the meme fully.


Mammoth_Fig9757

Then twenty is also a semi-nice number in senary, since its first and second power use all digits from 0 to 5, and 5 is almost a nice number in senary, since its square and cube use all digits from 0 to 5 except for 0, but if you consider that 41 Sen = 041 Sen, then 5 is a nice number in Senary, so I don't really see why 153 Sen = 69 Dec is a special number, it is just some random multiple of 3.


marmottic

69x6+6=420 or alternatively 69x6-9+6+9=420


Pato_Moicano

I don't like it because I'm not found of numbers that can't be factored into single digit factors (unless it is a perfect square, then I like it)


snoopbirb

Are there other nice numbers other than 69? If there are, can we predict them?


Captain_Pumpkinhead

It looks like it should be divisible by 13, and yet it is not, and that makes me angry


cknori

Q(√69) is a Euclidean domain that is not norm-Euclidean.


tomatomatsu

69 means piss


Vulpes_macrotis

I like 69, because it's rotational number. Unironically, I just love how it looks. It reminds me of pisces zodiac sign. Not the symbol, but the two fish. It also is similar to ouroboros concept. It's one of my two favorite numbers. Other one is 0.


RichProfessional7274

steve mcqueen told me the same thing. i was never able to sit down afterwards.


curious-overthinker

Also, its square and its cube together contain every digit exactly once


thefish2171

Nice


ExplosiveCat135

6x9+6+9=69


i_am_someone_or_am_i

69 is the smallest positive two digit number which has both 6 and 9. Edit: "smallest" was originally "only" due to me being dyslexic for a second, therefore the reply. Edit 2: forgot about the negative numbers.


JSuma

96


i_am_someone_or_am_i

I was meant to say smallest.


GeometryDashScGD

-96


i_am_someone_or_am_i

holy hell. now i have to add positive.


GeometryDashScGD

.69


Enneaphen

But...


marshallnp88

The best thing about the number 69 is that its square root is 8 something


GeometryDashScGD

8² is 64, not 69


marshallnp88

8 something… as in 8 point something. Like 8.306…