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## Numberphile

Joined Sep 15, 2011

Videos about numbers - it's that simple. Videos by Brady Haran

# Video

**The Forgotten Flexagon - Numberphile**

Views 174K4 days ago

**Where Does River Water Go? - Numberphile**

Views 174K17 days ago

**The Girl with the Hyperbolic Helicoid Tattoo - Numberphile**

Views 171K22 days ago

**3 as the sum of the 3 cubes - Numberphile**

Views 196K28 days ago

**The Mystery of 42 is Solved - Numberphile**

Views 497KMonth ago

**Reynolds Number - Numberphile**

Views 242KMonth ago

**Navier-Stokes Equations - Numberphile**

Views 350KMonth ago

**Amazing Graphs III - Numberphile**

Views 200K2 months ago

**Amazing Graphs II (including Star Wars) - Numberphile**

Views 204K2 months ago

**Amazing Graphs - Numberphile**

Views 482K2 months ago

**Frieze Patterns - Numberphile**

Views 224K2 months ago

**The Dehn Invariant - Numberphile**

Views 338K3 months ago

**James ❤️ A Card Trick - Numberphile**

Views 192K3 months ago

**Necklace Splitting (a lesson for jewel thieves) - Numberphile**

Views 196K4 months ago

**Don't Know (the Van Eck Sequence) - Numberphile**

Views 303K4 months ago

**Tribonacci Numbers (and the Rauzy Fractal) - Numberphile**

Views 269K4 months ago

**Game of Cat and Mouse - Numberphile**

Views 729K4 months ago

**Peaceable Queens - Numberphile**

Views 257K5 months ago

**Will your name become extinct? - Numberphile**

Views 298K6 months ago

**EVERY baby is a ROYAL baby - Numberphile**

Views 421K6 months ago

**A final game with Elwyn Berlekamp (Amazons) - Numberphile**

Views 215K6 months ago

**What's so special about the Mandelbrot Set? - Numberphile**

Views 656K6 months ago

**How many ways can circles overlap? - Numberphile**

Views 652K6 months ago

**90,525,801,730 Cannon Balls - Numberphile**

Views 388K6 months ago

**Infinite Series - Numberphile**

Views 286K6 months ago

**What's special about 277777788888899? - Numberphile**

Views 859K7 months ago

**The Plastic Ratio - Numberphile**

Views 344K7 months ago

**42 is the new 33 - Numberphile**

Views 506K7 months ago

**A Million Simulated Seasons - Numberphile**

Views 212K7 months ago

**All the Numbers - Numberphile**

Views 636K7 months ago

**A Colorful Unsolved Problem - Numberphile**

Views 432K7 months ago

**Heesch Numbers and Tiling - Numberphile**

Views 266K8 months ago

**1010011010 - Numberphile**

Views 255K8 months ago

**Card Flipping Proof - Numberphile**

Views 161K8 months ago

**The Trapped Knight - Numberphile**

Views 460K9 months ago

**The Graceful Tree Problem - Numberphile**

Views 311K9 months ago

**Divisibility Tricks - Numberphile**

Views 375K9 months ago

**Randomness is Random - Numberphile**

Views 522K10 months ago

**Introducing the Numberphile Podcast**

Views 143K10 months ago

**Terrific Toothpick Patterns - Numberphile**

Views 435K10 months ago

**The Centrifuge Problem - Numberphile**

Views 620K10 months ago

**What Number Comes Next? - Numberphile**

Views 328K10 months ago

**Squaring Primes - Numberphile**

Views 759K11 months ago

**A Strange Map Projection (Euler Spiral) - Numberphile**

Views 585K11 months ago

**Primes on the Moon (Lunar Arithmetic) - Numberphile**

Views 293K11 months ago

**The Most Evil Number - Numberphile**

Views 302K11 months ago

**Spheres and Code Words - Numberphile**

Views 231K11 months ago

**Kissing Numbers - Numberphile**

Views 200KYear ago

**The Best Way to Pack Spheres - Numberphile**

Views 383KYear ago

**Every Number is the Sum of Three Palindromes - Numberphile**

Views 341KYear ago

**Floating Bodies - Numberphile**

Views 151KYear ago

**Golden Ratio BURN (Internet Beef) - Numberphile**

Views 363KYear ago

**The Dollar Game - Numberphile**

Views 370KYear ago

**Does Hollywood ruin books? - Numberphile**

Views 266KYear ago

**Antipodal Points - Numberphile**

Views 179KYear ago

**5-Sided Square - Numberphile**

Views 1.4MYear ago

**Chinese Remainder Theorem and Cards - Numberphile**

Views 204KYear ago

**357686312646216567629137 - Numberphile**

Views 367KYear ago

**Balls and Cones - Numberphile**

Views 192KYear ago

**Earthquakes, Circles and Spheres - Numberphile**

Views 171KYear ago

**21-card trick - Numberphile**

Views 289KYear ago

**The Cross Ratio - Numberphile**

Views 257KYear ago

**How to make a Klein Bottle from an old pair of jeans - Numberphile**

Views 152KYear ago

**The Six Triperfect Numbers - Numberphile**

Views 283KYear ago

**Floating Balls and Lift - Numberphile**

Views 180KYear ago

**The Slightly Spooky Recamán Sequence - Numberphile**

Views 580KYear ago

**Weber's Law - Numberphile**

Views 533KYear ago

**g-conjecture - Numberphile**

Views 378KYear ago

**The Problem with 7825 - Numberphile**

Views 851KYear ago

**The Silver Ratio - Numberphile**

Views 532KYear ago

**The Golden Ratio (why it is so irrational) - Numberphile**

Views 2MYear ago

**The Coin Hexagon - Numberphile**

Views 366KYear ago

**The Pentomino Puzzle (and Tetris) - Numberphile**

Views 191KYear ago

**The Math (and money) of Soccer Stickers - Numberphile**

Views 138KYear ago

**Is the "hot hand" real? - Numberphile**

Views 218KYear ago

**Neon Knots and Borromean Beer Rings - Numberphile**

Views 216KYear ago

**Combinatorics and Higher Dimensions - Numberphile**

Views 174KYear ago

**Dealing Cards with Cryptography (with Ron Rivest) - Numberphile**

Views 151KYear ago

**Number Sticks - Numberphile**

Views 145KYear ago

**Round Peg in a Square Hole - Numberphile**

Views 705KYear ago

**Conway Checkers - Numberphile**

Views 182KYear ago

**Catalan's Conjecture - Numberphile**

Views 957KYear ago

**Superpermutations - Numberphile**

Views 303KYear ago

**Tree Gaps and Orchard Problems - Numberphile**

Views 598KYear ago

**Cannons and Sparrows - Numberphile**

Views 402KYear ago

**Calculating a Car Crash - Numberphile**

Views 358KYear ago

**The Square-Sum Problem - Numberphile**

Views 455KYear ago

**River Crossings (and Alcuin Numbers) - Numberphile**

Views 297KYear ago

**Ham Sandwich Problem - Numberphile**

Views 746KYear ago

**Don Bradman's Duck - Numberphile**

Views 264KYear ago

**An astonishing old calculator - Numberphile**

Views 624KYear ago

**An unexpected way to inflate a balloon - Numberphile**

Views 516KYear ago

**78557 and Proth Primes - Numberphile**

Views 424KYear ago

**The Ideal Auction - Numberphile**

Views 473KYear ago

**Pancake Numbers - Numberphile**

Views 254K2 years ago

**The Enormous TREE(3) - Numberphile**

Views 733K2 years ago

**Secrets to measuring a piece of paper - Numberphile**

Views 409K2 years ago

**Fibonacci Numbers hidden in the Mandelbrot Set - Numberphile**

Views 513K2 years ago

**Juggling by Numbers - Numberphile**

Views 229K2 years ago

**Equally sharing a cake between three people - Numberphile**

Views 1.5M2 years ago

**Strange Spheres in Higher Dimensions - Numberphile**

Views 515K2 years ago

Atharva Dhumal4 minutes ago"When you get to know that thia video also has 301 views"

Jonathan Robinson6 minutes agoCan you make a Flexagon with all combinations possible other than the obvious sheet of paper? If so, is there a pattern to the numbers of flexagon in which it is possible?

Russ Suvetar7 minutes agoSorry if I'm being thick, but at the @05:00 minute mark, what are you visualising with those dots and lines inside the circle boundary?

Michael Griffin11 minutes agoHow do you like twice?

TheJociman17 minutes agoweird flexagon but okay

אריאל פוקסמן31 minute agoI still did not understand why he took july and may out

Micah Pillsbury34 minutes agoI love how excited he gets

Lucaz Frechen41 minute agoWeird flex, but ok

ChanCeNecK56 minutes agoThis is probably the most excited I have ever been after the most boringest premise!

Cyberced56 minutes agoPlease turn that into a poster <3

Goran Lompar58 minutes agoEverythings is build on 3.

Simulacrum DeiHour ago*It Doesn't Move*

gacha kathleenHour agoAnd now its on 301 views ;-;

Carlos MontesHour agoI would have done screwed up this whole relationship trying to make my move.

Jacob ZondagHour ago5:07 Of course it's a coincidence. Mathematicians know no vanity.

JedqwertyHour ago3 years ago: *anything* Every modern day: *N I C E*

Baumus77Hour agonice

Kaneki Gaming2 hours agoYang kesini gara gara meme siapa hayo Like👍

Su_real2 hours agoI wonder how much views does this video has

ProBroPalz Gaming2 hours ago30 legal moves for the first move is wrong. There are 2*8 moves for pawns and 2*2 moves for Knights. No other pieces can start the game. So there are 400 variable lines for 1. ... ...

jetjet2682 hours ago*Aww sh*t, here we go again* years after Vihart videos

amilo52 hours agozero devided by zero: I am the ditto of all numbers. I can be whatever you want me to be.

Rust Bucket2 hours agoNice squares? Please our roads follow the terrain of the land!

alphabroly283 hours agoahhh this is the problem when measuring by volume and not by mass haha - Chemist/ Chemical Engineer

Eric Taylor3 hours agoThe thing about Zeno's Paradox is, it is not a paradox. It is an example of, "If your logical reasoning contradicts reality, your logical reasoning is flawed." No matter if your reasoning seems perfect, no matter if you don't know how your reasoning is flawed, it is, in fact, flawed. When working out a problem with logic, you must make certain assumptions, such as, "There are an infinite number of 'half ways' between any two points." Zeno's Paradox assumes that space can be divided into smaller and smaller chunks forever. In fact, it is built on this assumption. If that assumption is wrong, if space is grainy, like so many other aspects of reality, then the paradox will be resolved. Even if those grains are tiny.

raptor eagles3 hours agoIn Indian number system, every group needs only one word to define magnitude of that group. It don't need things like '... hundred thousands' etc. Those words don't have any pattern in them though.

Jp_Ofc12345b r3 hours agoQuem é portugues??? who speaks Portuguese

Paulo Khayat3 hours agoWierd flexagon, but okay

Saiful Press3 hours agoSiapa indo

Kev Alan3 hours agoTHIS IS AMAZINGGGGG

Shawnaldo753 hours agoThat was the dumbest thing I've ever seen. I thought "Numberphile" would show people how to find the center of the circle (cake) and make the 120 degree cuts needed.

Michael Montgomery3 hours agoNeat!

Chasman Rose3 hours agoThanks for sharing! I might have to make some of these!

PASUNURU SAI VINEETH3 hours agoEven though I like the content very much, I am usually more interested in finding how they are going to relate the title to the video. I mean, "58 and other confusing numbers" can lead us anywhere. There's no way we can guess that the video might be related to bases and linguistics!

pro fortnite3 hours agoViews 301 Like 445k RU-clip is drunk again!

Hien Duong Van3 hours agoParker Circle

Miroslav Čižmár3 hours agoIn 1/2 minute the light is on and off together in probability. It is like to count a future. You can see it only in probability.

Random Guy4 hours agoIts will never be changed Its will be 301 views forever

PIYUSH YADAV4 hours agoHow to make friends 0:02

Ash Ketchum4 hours agoWish you reach, 3.14M subs!!

Dragonator4 hours agoTHIS HAS 301 views and my RU-clip crashed when I watched it

Rylac Zero4 hours agoSeems kinda obvious. Collatz conjecture is entangled with Goldbach conjecture.

Rylac Zero4 hours agoTime is not right or I would tell you more about this story.

Αγγελική Κουνελούλη5 hours agoA question for James: Can we find the smallest unknown prime, as well as other unknown primes, using this method?

Belias Phyre5 hours agoSeven is a six offender! Ha! I'm going to use that.

אריאל פוקסמן5 hours agoWhat about isolated tribes?

si bocah25 hours agoI already watch this video along time ago and yt just recommend it againt

Aditya Singh5 hours ago87k comments 445k likes............still 301 views (as of 21st October 2019)

WcaleNieDobryKolega5 hours agoThe views count is 8.5 milion what the hello guys

surfer8555 hours agoPrime numbers or... Grime numbers?

Dinh Ngoc Tung5 hours agoHe must be a native French speaker

f965 hours agoBruh, I’ve always make that orthogonallic typeof flexsgon, and it’s really cool.

Andrius Kasiliauskas6 hours agoSuper video!!!!

Mr. Enderman6 hours agoIt is still 301!!!!!!!

Vojta Maur6 hours agoWilson's theorem in python: import math p=int(input("Enter the number: ")) x=(math.factorial(p-1)+1)%p if x==0: print("PRIME!") else: print("NOT PIRME...")

FREENET ASIA6 hours ago301 views? -2019 ;)?

PalladianPD6 hours agoI once made a dodeca-hexaflexagon. It was super cool but it was a lot of work and slightly complex.

patrik zvezda6 hours agoHahahaha

velorien9966 hours agoyou think that's impressive? try 23/33

velorien9966 hours agothe answer is 72.6 because i said so

Aayush Goyal7 hours agoSimple harmonic motion and all this other stuff of harmonic motion is thought in class 11 in India

ben rogers7 hours agoHe he... 'doodlefile'...

Ryan Blais7 hours agoI would think think was a late-night infomercial, winding up to try and take my money... except it’s on Numberphile, lol

Ooofer Cucumber8 hours agoWait it’s still 301 views

Quincy Allen8 hours agoI bet it'll be a Parker square birthday lol

vantho le8 hours agoI dare the 10 billion view on this vid rn

Forrest Travison8 hours agoI am an idiot when it comes to math, and debatabl(e)y the idiocy may be non-specific to any subject, so please forgive my question's ignorance. Does the way we measure, for example that we use base 10 (but I don't mean just this aspect of measurement), have any bearing on why we might have the paradox with irrational numbers? Huge fan of the channel thank you so much. Consider Patreon.

MikeKatz458 hours agoI fell in love :0

Maria Celestin Vigila S9 hours agolol Bolt didnt even wear a watch on his run to argue

MaxStar McDonald9 hours ago100% thought this was Eppes from Numb3rs for like 5 seconds

Archeaic Meumees9 hours ago*T H R E E*

Akshat Bhutra10 hours agobinary numbers are really useful

moyee 6410 hours agoGuy: blue Pen: green

Henry Willems10 hours ago2^5^0,4-0,6-(0,3^9/7)^0,8^0,1 is equal to 3.14159265359 - approximately π

dissya110 hours agodont know how i did end here but i am in love now:P

Spinlop11 hours agomatt parker flexing on vihart

Darshee11 hours agoThese are the views that the video would really have. | | V

Aaron Franke11 hours ago6:55 Facebokk?

EMCB - Tutorials11 hours ago😂

BrandonHeilBHB11 hours ago"theres loads of patterns for primes! Yeah it doesn't work for 2 or 3 but those aren't really primes" I guess they're parker primes then yeah?

Josh Martinez11 hours ago7:30 base three😆

TheG11 hours agoI’m curious as to what the various Numberphiles think of Doctor Who’s Block Transfer Computations, the mathematics that create reality, first appearing in 1980’s Logopolis.

Thiccy Cheeser12 hours agoWeird flex, but ok

Ali Qazilbash12 hours ago🧶

Zachary Radke12 hours agoI have a wonderful proof for this but unfortunately it will not fit in the RU-clip comment section

Nathan Young12 hours agoWhat happened to your mouse, man?

Emma12 hours agoCan we take a moment to appreciate the person who made all these flexagons for this video

Nametag12 hours agoAccording to the Klingon/English Dictionary, Klingons actually used base-3 math for counting, and only came up with base 10 numbers thanks to contact with the Federation.

Rhapsody The Blue12 hours agoDoesn’t the time series explain it? It takes two seconds. Or does this show the universe is quantized?

Aakash13 hours agoThis is Given By Great Indian Mathematician Srinivas Ramanujan

The Zodiac Killer13 hours agoDodecahedron is my new favorite word

Lalo Trejo13 hours agoWhy is this video at 310 views

Angel Gonzalez13 hours agoThere goes Parker making squares again!

Endermage7713 hours agoThe best way to get a computer to generate a random sequence is to run an abritrary seed through a series of self-referential and compounding calculations that are so convoluted that not even the bloke who wrote the blasted thing understands how the input gets to the output

Charles Knippenberg13 hours agoHow about paid high school teaching fellowships?

Henphos14 hours agoI turned 11 on 11/11/11

Charles Kile14 hours agoSo what is so special? Lol

Mark Jimenez14 hours agoI wonder how excited hes gonna be once he reaches 3.14 million subs

Rhapsody The Blue14 hours agoYou hit an LED with a fast square wave to make it light up at 1/2 illumination.

Legobananaman95 Yt14 hours agoCan’t u just do (x= area of square \|x= side of a square) \|(\|x/pi) the square root of the square root of x divided by pi so that u get what u get and square it then multiply by pi and u get the area of the square