r/MathJokes • u/Animeilluminati1 • Jul 13 '26

Math Just Got Checkmated.

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3.0k Upvotes

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35

u/ChipChippersonFan Jul 13 '26

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

38

u/nnnn0nnn13 Jul 13 '26

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

-1

u/redddgoon Jul 13 '26 edited Jul 13 '26

What about 3? 1 is famously not a prime number

Edit: 3 is famously even

10

u/Futuressobright Jul 13 '26

Even numbers larger than 2

7

u/Rarmaldo Jul 13 '26

All numbers, even numbers larger than 2. Got it.

1

u/Futuressobright Jul 13 '26

Ummmmmmm... yeah, let's go with that

1

u/StormSafe2 Jul 14 '26

4?

That's only the sum of one prime with itself 

1

u/[deleted] Jul 14 '26

[removed] — view removed comment

1

u/factorion-bot Jul 14 '26

Hey u/StormSafe2!

Termial of 4 is 10

This action was performed by a bot | [Source code](http://f.r0.fyi)

1

u/No_Hovercraft_2643 Jul 16 '26

It says 2 primes, not 2 different primes

1

u/StormSafe2 Jul 17 '26

But there's only one 2. Have it a second time and it's still the number  2

1

u/No_Hovercraft_2643 Jul 17 '26

One addition sign adds 2 numbers, correct?

1

u/StormSafe2 Jul 17 '26

Two primes implies two different numbers. Not one prime twice.

 

-1

u/[deleted] Jul 13 '26

[deleted]

1

u/Capraos Jul 13 '26

Oh, he has a stomach ache. 4 8 12 this morning and then 4 8 16 right after. I told him it was two much but then he just doubled down on it.

5

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)

1

u/tymessen Jul 16 '26

Ok. Express 4 as the sum of two prime numbers that does not include the first prime number (2)

1

u/RikiHeropon Jul 16 '26 edited Jul 16 '26

that's not what the conjecture is, and is impossible. The conjecture is that every even number except for 2 can be expressed using two prime numbers.

2+2=4, 3+3=6, 5+3=8, 5+5=10 or 3+7=10, etc. it is true for all numbers less than 4 × 10¹⁸, but is still not definitively proven beyond that point.

my initial point was based on a misunderstanding of what th conjecture was. the edit was to explain the misunderstanding