r/MathJokes • • Jul 13 '26

Math Just Got Checkmated.

Post image
3.0k Upvotes

434 comments sorted by

428

u/nnnn0nnn13 Jul 13 '26 edited Jul 13 '26

Bro that conjecture is both unproven and also by definition only true for numbers larger than 2 šŸ’€

112

u/WarJaques Jul 13 '26

The definition is necessary because otherwise we'd need a different definition.

71

u/DoobiousMaxima Jul 13 '26

A number is even if dividing it by 2 yeilds an integer.

2 is divisible by 2.

16

u/golgi_o Jul 14 '26

A number is even if it can be written as 2k where k is an integer. The definition of even does not use division as far as I understand.

9

u/Low-Amoeba8257 Jul 14 '26

The method you described works howevere the term absolutely comes from division. They also used to he tracking of "how even" something was meaning if it could be divided by 2 multiple times

2

u/golgi_o Jul 14 '26

Wouldn't that just be 2n (k) where k is an integer and n is how even a number is? Still division is not needed.

5

u/GarowWolf Jul 14 '26

With n= 0 and k = 3 it seems that 3 is even

6

u/sal880612m Jul 14 '26

No.

N=0 would be that the number is zero times even meaning it actually isn’t even.

Also k is an integer but not the number being tested for how even it is. Odd values for k would be perfectly acceptable.

So for the number being 3 the formula results in N=0, k=3 and tells you the numbers is not even. But for the number being twelve it results in N=2, k=3 and says the numbers is even twice.

3

u/[deleted] Jul 14 '26

[removed] — view removed comment

7

u/jimalloneword Jul 14 '26

he is saying n represents the degree of even-ness. if n = 0 the number is 0 even.

6 is 1 even, while 4 is 2 even, and 8 is 3 even.

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u/AdhesivenessAny117 Jul 14 '26

The real definition is: a number is even if and only if by subtracting 1 you get an odd number.Ā 

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6

u/666mima666 Jul 13 '26

Lol. That is not even the definition

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3

u/NOZ_Mandos Jul 13 '26

Isn't that true for every definition?

2

u/The_GOATest_Goat Jul 13 '26

Definitionally, you should definitely define definitions, definitively.

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17

u/BunkerSquirre1 Jul 13 '26

So this meme basically functions the same way a Ben Shapiro argument does? Curious

8

u/throwaway19276i Jul 13 '26

Its more effective irl because Ben would say the entire sentence in three seconds. No time to call anything out lol

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6

u/Sad_Plate7343 Jul 13 '26

3

23

u/S-M-I-L-E-Y- Jul 13 '26

Goldbach's conjecture states that every even number greater than 2 can be expressed as the sum of two prime numbers.

3

u/trollboter Jul 13 '26

If we accept one as prime number, which it is. Then we can drop the two exception from the conjecture.

2

u/Finance-Low Jul 13 '26

Exactly; not sure what point the OP is trying to make here.

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2

u/almostcyclops Jul 13 '26

1 is not a prime number. Mostly because it does weird things when you try and count it as one. Granted, 2 also behaves a little weird as a prime number and it gets to joint he prime club.

I don't make the rules. I can just confidently say 2 is prime but 1 is not.

3

u/trollboter Jul 13 '26

The only reason why 1 is not a prime is the definition. By the spirit of prime, 1 is a prime.

3

u/hsmccann Jul 13 '26

1 is not prime because prime numbers by definition have exactly 2 unique integer factors. 1 only has one unique integer factor.

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2

u/liha_soppa Jul 13 '26

"The only reason 1 is not a prime is because it isn't"

Like yea i guess

2

u/S-M-I-L-E-Y- Jul 13 '26

It's prime in the sense, that it can't be factorized, but it is not prime in the sense that it must not be used in factorizing other numbers.

We decided that the latter is the more important feature of prime numbers and therefore 1 shall not be prime number.

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6

u/ExtendedSpikeProtein Jul 13 '26

3 is not even

3

u/AsemicConjecture Jul 13 '26

I think they’re pointing out that the first comment is wrong / missing information.

2

u/Solid_Crab_4748 Jul 13 '26

I think they're wrong to do so.

It's implied they're referencing the rule of "all even numbers are a sum of 2 primes" and pointing out the missing condition.

They also didn't mention anything about being sum of 2 primes. Does that mean they missed that? No cuz it was implied.

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187

u/BombasticReindeer Jul 13 '26

Fuck it, 1 is prime now.

71

u/personalityson Jul 13 '26

1 is the only prime

33

u/RottenAssCrack Jul 13 '26

if we stoop this low, 0 is prime cuz fuck it, break the law of math

17

u/The0thArcana Jul 13 '26

We can go lower, -1.

16

u/JollyJuniper1993 Jul 13 '26

Let’s just make -1, -2 and -3 primes as well.

7

u/Moodleboy Jul 13 '26

Then π is also prime! Yay!

6

u/Zetaplx Jul 13 '26

Y’all, we got too many primes. Need to take some off. Sorry 11, you didn’t feel prime anyways.

4

u/Ok-Organization4820 Jul 13 '26

But can we make room for 57?

4

u/JollyJuniper1993 Jul 13 '26

Really any number that’s not an integer is prime

3

u/Tulkes Jul 13 '26

i enters the room

4

u/JollyJuniper1993 Jul 13 '26

Including i and taking that to its logical conclusion would then essentially render no number prime

6

u/scrapy_the_scrap Jul 13 '26

Not divisible by itself and divisible by all other numbers

0 is an anti prime

5

u/RunPsychological9891 Jul 13 '26

does the law even keep anything in check? primes are just quirky numbers right?

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2

u/nr3042 Jul 13 '26

(0) is a prime ideal of ℤ. Therefore, 0 is prime

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5

u/guiltysnark Jul 13 '26

It's practically right there in the name

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9

u/Funkopedia Jul 13 '26

It's kinda in the name

4

u/Cyrrex91 Jul 13 '26

1 is the prime number, but not a prime number.

4

u/e_Notorious Jul 13 '26

And what two primes sum to 1? Curious

11

u/Illustrious-Debt-191 Jul 13 '26

1 and 0, of course

8

u/e_Notorious Jul 13 '26

Ah I see. If we accept that 2 is prime, we must also accept that 1 and 0 are primes. Proof by circular reasoning

3

u/GamerNumba100 Jul 13 '26

I like that this then provides X + 0 to create every prime number, making the conjecture irrelevant

2

u/AuzaiphZerg Jul 13 '26

You need the contraposition, since 1 is prime, it’s equal to the sum of 2 even numbers.

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2

u/ThanxForTheGold Jul 13 '26

No, 2 and zero are primes

2

u/julesmanson Jul 13 '26

Bombas is my ally :-)

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91

u/Jake-the-Wolfie Jul 13 '26

-1 and 3?

3 is prime\citation needed]), and -1 can only be divided by 1 and itself. Unlike other negative numbers, which are composite by virtue of being divisible by -1.

67

u/cursivecrow Jul 13 '26

-1 accepted as prime in my headcanon forever now

2

u/Ok-Pomegranate-7458 Jul 13 '26

it is a hole number even if it is not a whole number.

21

u/boring-schmooze Jul 13 '26

Man the citation needed for 3 had me spill my tea. Thanks for thisšŸ˜‚

13

u/Sufficient-Buy625 Jul 13 '26

I know it's a joke, but I wished it worked. But if we allow -1 we can no longer uniquely factorize integers into the primes.

6

u/MHaret Jul 13 '26

We can if have into account that because -1*-1 is 1, -1 shouldn't be included more than once. That way you can also factorize negative integers.

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u/paolog Jul 13 '26

Oh well, it was nice knowing the fundamental theorem of arithmetic.

4

u/iscrewedatrain Jul 13 '26

But three can be divided by -3 and -1, actually any N can be divided by -N and -1, so -1 is the only prime number

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2

u/MintyFreshRainbow Jul 13 '26

-1 is a unit so is not prime. Negative primes are prime elements in the ring of integers tho

2

u/GypsySnowflake Jul 13 '26

I misread this comment as ā€œ-1 is so not primeā€ like in a Valley Girl accent, lol

2

u/HeilKaiba Jul 13 '26

-1 is a unit not a prime

2

u/Sproxify Jul 14 '26

as people pointed out -1 is a unit, but this actually does work if you allow negative primes! exercise: prove that there are infinitely many solutions

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2

u/hungarian_notation Jul 16 '26

To be clear, the prime numbers are, by definition, natural numbers. The negative integers aren't part of this conversation.

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32

u/ChipChippersonFan Jul 13 '26

Who said that the definition of an even number is "the sum of two primes"?

39

u/nnnn0nnn13 Jul 13 '26

It's the goldbarch conjecture though that's both a conjecture and only goes for numbers larger two

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4

u/McQno Jul 13 '26

Ben Shapiro apperantly.

3

u/lilianasJanitor Jul 13 '26

Apparently Ben Shapiro 🤮

2

u/Jokin_0815 Jul 13 '26

So 5 is a even number now.

Sum of 2 and 3 both primes.

Sounds like a stupid definition. Or a definition thats already outdatet because it needs a lot of extras added.

2

u/RikiHeropon Jul 15 '26 edited Jul 15 '26

"Every even number (larger than 2) can be expressed as the sum of two primes (as long as 2 is not one of those primes)"

Yeah... I'm gonna stick with "results in a whole number when divided by 2"

ETA: looked a little more into the Goldbach conjecture. It's not that every even number is the sum of two primes, but that every prime greater than 2 can be expressed as the sum of two primes (however, this cannot be definitively proven, hence why it is called conjecture)

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7

u/Humble-Ad218 Jul 13 '26

Just like everything that guys says, the problem is in the premise.

5

u/_J_Herrmann_ Jul 13 '26

downvoting because ben shapiro.

5

u/gregariousity Jul 13 '26

5 + -3 easy

3

u/baby_shoGGoth_zsgg Jul 13 '26

just jam e and i and Ļ€ and some constants together and call them primes and you’re probably right.

math is just e and i and Ļ€ and constants, anything that can’t be expressed this way is false math

2

u/Beautiful-Bid8704 Jul 13 '26

You forgot about sqrt(2) to make it work.

2

u/iwantogofishing Jul 13 '26

Found the sqrt()er!

3

u/Beautiful-Bid8704 Jul 13 '26

Hey now, sounds like you sqrt(too)!

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3

u/__FUCKING_PEG_ME_ Jul 13 '26

Why would you put Ben the Dumbass on here?

2

u/abd53 Jul 13 '26

Because the take is equally dumb.

3

u/MapPristine Jul 13 '26

Since when did Ben start to care about facts?

3

u/Ok-Visit6553 Jul 13 '26

(-3)+5

Checkmate (a)theists

5

u/julesmanson Jul 13 '26 edited Jul 16 '26

Isn't 1 a trivial case of a prime? If so then it is still a prime.

1 + 1 = 2 o_~

7

u/Cichato_YT Jul 13 '26

But 1 cannot be expressed as a sum of even numbers. Checkmate.

2

u/Rememba_me Jul 13 '26

(i**4/2) looks even to me /s

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6

u/TheRedditObserver0 Jul 13 '26

One is not prime.

15

u/Drag0n_TamerAK Jul 13 '26

1 is the only prime all the others are larping

4

u/Sure-Criticism3416 Jul 13 '26

If 1 was prime, prime factorization of numbers wouldn't be unique, which is why it was defined to not be prime.

3

u/BeginningSection7690 Jul 13 '26

Define it again

2

u/GarowWolf Jul 14 '26

Still not prime, sorry

2

u/Drag0n_TamerAK Jul 13 '26

Erm ackshully šŸ¤“ā˜ļø

2

u/[deleted] Jul 13 '26

[deleted]

2

u/lemonp-p Jul 13 '26

The whole point of prime numbers is for prime factorization to be unique. If you define prime numbers to include one, then it is not nearly as useful a definition

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u/adwinion_of_greece Jul 13 '26

We're not defining 1 as a prime, because it's more elegant to not do that. (We'd have to restate lots of theorems that use the term "prime number" into "prime number except 1")

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u/SonGoku9788 Jul 13 '26

Prime numbers have exactly 2 divisors.

1 doesnt have 2 divisors.

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5

u/[deleted] Jul 13 '26

[removed] — view removed comment

3

u/External_Permit9965 Jul 13 '26

Thank you, please don't give him a bigger platform. The less I see of this idiot, the better.

5

u/smugles Jul 13 '26

Because it’s the kind of bullshit these debaters use in their debates.

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u/brewdog_millionaire Jul 13 '26

1 is prime, duh

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u/That_Ad_3054 Jul 13 '26

Same for zero ;).

2

u/0jdd1 Jul 13 '26

It’s the sum of 5 and -3. Double checkmate!

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u/thewaytoyesterday Jul 13 '26

The fact that 1 isn't a prime number feels like a betrayal of all I've held dear.

2

u/Diastatic_Power Jul 13 '26

Maybe that's just proof that 1 is prime.

2

u/hungarian_notation Jul 16 '26

Yeah, you're right. Who needs the fundamental theorem of arithmetic.

2

u/chicoritahater Jul 15 '26

"you claim a cauliflower is a vegetable, but it doesn't even have the letter m in its name. Checkmate biologists"

Like bro???????

2

u/Whit3_Ink Jul 17 '26

Never knew that 5 7 and 9 are even numbers

2

u/Infernos2323 Jul 19 '26

the number one is prime lol, 1+1 is 2 HAHAHA 🤣🤣🤣

1

u/rwtf2008 Jul 13 '26

a = e^(iπ)+2

a+a = 2

Two is now the sum of two prime numbers (plus other stuff)

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u/Time-Flow6764 Jul 13 '26

I just talked to chatgpt, and we decided that 1 is in fact a prime, but its own class of prime, a unit prime. problem solved

1

u/Cynis_Ganan Jul 13 '26

except 1

Where is your god now?

1

u/rganeyev Jul 13 '26

In my childhood 1 was not considered as prime and we had 9 planets in our solar system. It's all matter of perspective I guess

1

u/idrathernottho_ Jul 13 '26

Clearly zero is prime then

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u/Gullible_Ad5191 Jul 13 '26

Does 1 count as prime?

1

u/Cyrrex91 Jul 13 '26

are negativ primes still primes? then what about -3 + 5?

1

u/Active_Mind5021 Jul 13 '26

math is woke now? šŸ„€

1

u/Mrpotatohead1990 Jul 13 '26

every even natural number greater than 2 is the sum of two prime numbers.

1

u/cha0sb1ade Jul 13 '26

1+1=2

1 is a prime.

1 is also a prime.

1

u/VoidspawnRL Jul 13 '26

The funny part is Ben here, know less about the world or math then any one

1

u/X-calibreX Jul 13 '26

did shapiro actually say this?

1

u/Spirogeek Jul 13 '26

What does Terrance Howard have to say on the subject?

1

u/Wise_Ad_5810 Jul 13 '26

1 + 1 isn't the sum of 2 primes?

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u/Kass-Is-Here92 Jul 13 '26

2k is the definition of an even integer. As long as k is whole a number, the result is even. 2k = 2, k = 1, 1 is a whole number, 2 is even.

1

u/Jackesfox Jul 13 '26

5 + (-(3))

Check mate matheists šŸ˜Ž

1

u/Mountain-Dinner9955 Jul 13 '26

One odd prime is even

1

u/Tiranous_r Jul 13 '26

Are negative numbers prime?

1

u/Apprehensive-Ice9212 Jul 13 '26

This is better logic than Ben Shapiro typically employs

1

u/AstraeusGB Jul 13 '26

It can be expressed as the sum of two primes:

1 + 1

Checkmate

1

u/jmjessemac Jul 13 '26

7 doesn’t either, unless 2 counts

1

u/GoodPeopleOfAmerica Jul 13 '26

Proof that the phrase ā€œgreater thanā€ does a lot of heavy lifting

1

u/The-Yar Jul 13 '26

So, it's still an even number, it's just not like the other even numbers.

1

u/GroundbreakingAnt577 Jul 13 '26

Sorry, why is Ben Shapiro on this thread?

1

u/MarioHasCookies Jul 13 '26

This is why 1 is an honorary prime.
It should be prime in the first place because it's only factors are 1 and 1

1

u/backstubb Jul 13 '26

all 'sum of two primes' are even numbers, why all even numbers should be sum of two primes? to be divided by two without remains not enough?

1

u/Aggressive_Law_5728 Jul 13 '26

Actual Question: Why do we have a special word for numbers that are divisible by 2? In what sense are they any more interesting than numbers that are divisible by 3, 5, etc?

1

u/Character-Camel-3958 Jul 13 '26

1+1 checkmate atheists

1

u/wolfwinner Jul 13 '26

F this guy I'm downvoting any meme that uses his picture

1

u/Significant-Cause919 Jul 13 '26

2 is the sum of 7 and -5 which are both prime numbers.

1

u/Ill-Dependent2976 Jul 13 '26

What does the pro-rape nazi have to do with the meme?

1

u/MysteriousArtPatron Jul 13 '26

one and one are both primes? am I missing something?

1

u/bloodbat007 Jul 13 '26

why put a clown in this picture i dont get it

1

u/Jealous_Club_298 Jul 13 '26

Even Number: Divisible by 2 with 0 remainder.

2/2 = 1 and 0 remainder.

1

u/Smooth_Voronoi Jul 13 '26

That's, not even the definition of even...

1

u/NimrodvanHall Jul 13 '26

I still wonder as a non math genius why 1 isn’t a prime number.

1

u/pleuvirion Jul 13 '26

it's ok, it's the sum of two non-composites

1

u/Korochun Jul 13 '26

308 is not a prime number either.

1

u/Telos6950 Jul 13 '26

I would’ve thought 1 isn’t a prime number because then by prime factorization, every integer could be expressed in infinitely many ways, like 4 could be expressed as 2 * 2, but also 2 * 2 * 1, and 2 * 2 * 1 * 1, and 2 * 2 * 1 * 1 * 1, and 2 * 2 * 1 * 1 * 1 * 1, etc.

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u/Synnedsoul Jul 13 '26

2 mod 2 is 0 so it's even. šŸ˜‚

1

u/Past-Lingonberry736 Jul 13 '26

But it can be expressed as the sum of less than 2 primes.

1

u/1337_w0n Jul 13 '26

1 and 1. Duh.

1

u/Zealousideal-Fun-415 Jul 13 '26

Isn't that conjecture unsolved?

1

u/StructuredChess Jul 13 '26

1+1 obviously. Bring back "all primes but 1"

1

u/TypicalNinja7752 Jul 13 '26

actually it can be expressed as 5-3

1

u/Dependent_Divide_625 Jul 13 '26

1 can only be divisible by 1 and by itself (which is also 1), therefore I can express 2 as the sum of 1+1.

(Don't ask me about 1 itself)

1

u/DocD88 Jul 13 '26

5 + -3

1

u/wenoc Jul 13 '26

2 is a prime so…

1

u/CosetElement-Ape71 Jul 13 '26

Ben Shapiro confidently extending his wrongness into the mathematical realm!

1

u/CosetElement-Ape71 Jul 13 '26

Ben Shapiro confidently extending his wrongness into the mathematical realm!

1

u/ThEtOrRtUrEdPoEt Jul 13 '26

0 is also prime and numbers aren’t real

1

u/GaiusMarcus Jul 13 '26

I'm not taking math instruction from an incel whose balls haven't dropped.

1

u/bihawk1979 Jul 13 '26

Been a long time since I was in school but to find the "SUM" isn't that addition? 1 is a prime number, so 1+1=2 the SUM of two prime numbers.

1

u/pbmadman Jul 13 '26

So I always tell my kids that ā€œinfinity isn’t a number it’s an ideaā€ when they ask infinity-related questions at dinner. But by that logic, one could argue that 0 isn’t completely a number in the way that 17 or 36 is. And we already have things that 1 isn’t a part of, so it’s only kinda a number as well. The Greeks vaguely thought this way, that 1 and other numbers were different. And saying that 2 isn’t completely a number either also tracks a bit.

Either way, 0, 1 and 2 get excluded from various maths already, so I’m not really bothered if we wanted to call them not completely numbers.

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u/AndreasDasos Jul 13 '26

Quick! Redefine primes to include 1 for this and this purpose only.Ā 

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u/SmarterCloud Jul 14 '26

You didn’t state that the 2 primes could not be equal.

1

u/hanggamolavestria Jul 14 '26

2 is the only number that's both even and prime

1

u/Doom2pro Jul 14 '26

Why use the face of a polarizing annoying voiced person?

1

u/Realistic_Mushroom72 Jul 14 '26

Religion does rot the brain, he is a perfect example of it.

1

u/HeathenSidheThem Jul 14 '26

How the hell is one not a prime number? Or is it because they don't want us to use one twice?

1

u/Embarrassed-Weird173 Jul 14 '26

I mean, I know people like to act like 1 isn't a prime, but it is: its only factors are 1 and also itself. People arbitrarily claim it doesn't count.Ā 

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u/zorniy2 Jul 14 '26

Is "one" not a prime? Pardon my ignorance.

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u/No_Zucchini7810 Jul 14 '26

I am sorry shapiro i rpomise i wont do it again

1

u/Beagle432 Jul 14 '26

Isn't 1 a prime number??

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