Every Unsolved Math Problems that Sounds Easy - Part 2

Timestamps

0:00 Mersenne primes
1:52 Perfect numbers
4:58 Rational distance problem
6:49 (Sponsor Break)
7:38 Moving sofa problem
9:06 Inscribed square problem
10:38 Ramsey theory problem

Thanks for watching.

This video was sponsored by Brilliant.

— DISCLAIMER —

This video is intended for entertainment and educational purposes only. It should not be your sole source of information. Some details may be oversimplified or inaccurate. My goal is to spark your curiosity and encourage you to conduct your own research on these topics.

[yusufsheikh]

"Rotate the hallway around the sofa" 😂😂

[yusufsheikh]

I feel like the phrase "part 2" is self inflammatory considering the last one was supposed to cover every problem.
Jk I'm a big fan also second

[Zaimaen]

"Unsolved math problems that sounds easy"
"Something about primes i dont grasp"
My head:
"Whoms easy is meant in the titel?"

[caspermadlener]

4:28
Correction:
There exists a bijection between EVEN perfect numbers and Mersenne primes.
If there exist infinite odd perfect numbers, this doesn't necessarily mean that an infinite amount of Mersenne primes exist.

[cyrilmeynier]

a very small nitpick at 4:40 : there is a proven bijection between mersenne prime and EVEN perfect number.
it excludes if odd perfect numbers... if any exist, as stated before

[josephbrandenburg]

The ramsay theory problem is very hard to understand. In your picture, the edges are not all the same color. They're red, blue, and black. Problem solved. 2 dimensions. It's a square.

[ArtUniverse]

I "discovered" Mersenne primes on my own when I was about 15 years old. Imagine my disappointment when I learned that some French guy beat me by four centuries.

[jonathanlevy]

about Ramsey problem, the problem itself is much more general and actually explaining the general case would be easier because it is not related to hyper dimensional squares at all

[shadowcloud]

5:40 minor mistake. You have a (0, 1) twice instead of a (1, 1)

[xhmqtym]

Perfect numbers go hand-to- hand with Mersenne primes. As [2^(p-1)][2^(p)-1] is the form of all found perfect numbers.

[davidhopkins]

Who know that moving a sofa could be so complicated

[richardl]

2^(2y+1)-2^y where y=0, 1, 2, 3... can be use to find perfect numbers, Not all numbers produced by this formula are perfect but all perfect numbers (so far) fit this formula.

[AA-]

5:31, this is not the common cartesian coordinate system, you have the x and y axes the wrong way round, y nornally goes on the vertical axis and x on the horizontal

[darreljones]

I know what the "double arrow" in the giant number at the end of the video means. But can someone tell me the meaning of the "double less-than" symbol?

[kmed-qz]

just solved the rational distance problem i think, not that difficult

[muhaimincps]

Well since I'm not studying in mathematics. Can someone explain why is it important that we understand this type of questions? Like what does it solves?

[samsmemes]

what do you make your videos on cheers

[asagiai]

Isn't the sofa problem already answered.

[uduiztr]

Dr. Doom, from MARVEL comics, knows how to answer and solve all of these problems. If he didn’t, he would look pretty foolish, wouldn’t he?