Why is this number everywhere?

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Published 2024-03-28
The number 37 is on your mind more than you think. Head to brilliant.org/veritasium to start your free 30-day trial and get 20% off an annual premium subscription.

Huge thanks to Tom Magliery for sharing his 37 collection with us. Support thirty-seven.org/ by sharing your own 37 sightings to [email protected]!
Thanks to Dr. Todd Landman, the Academic Magician, for sharing his footage of the 37 Force. - www.todd-landman.com/

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Special thanks to our Patreon supporters! Join the community to help us keep our videos free, forever: ve42.co/PatreonDE

Sam Lutfi, Lee Redden, Juan Benet, Richard Sundvall, Paul Peijzel, Gnare, Michael Krugman, Meekay, Ubiquity Ventures, Marinus Kuivenhoven, Bill Linder, Evgeny Skvortsov, Burt Humburg, Dave Kircher, Diffbot, john kiehl, Blake Byers, Stephen Wilcox, John H. Austin, Jr., Josh Hibschman, TTST, Orlando Bassotto, Anton Ragin, David Johnston, KeyWestr, Tj Steyn, meg noah, Chris Harper, Adam Foreman, Max Paladino, Balkrishna Heroor, I. H., Garrett Mueller, Bertrand Serlet, Kyi, wolfee, Matthias Wrobel

If you’re looking for a molecular modeling kit, try Snatoms, a kit I invented where the atoms snap together magnetically - ve42.co/SnatomsV

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References:
Simon, W. E. (1972). “Blue Seven Phenomenon” in Elementary and Jr. High Children. Psychological Reports - ve42.co/Simon1972
Trueman, J. (1979). Existence & Robustness of Blue Seven Phenomena. The Journal of General Psychology - ve42.co/Trueman1979
Saito, M. (1999). “Blue and Seven Phenomena” in Japanese Students. Perceptual & Motor Skills - ve42.co/Saito1999
Philbrick, J. L. (1976). Blue seven in East Africa: Preliminary report. Perceptual & Motor Skills - ve42.co/Philbrick1976
Hargreaves, S. (2009). The psychology of randomness. - ve42.co/Hargreaves2009
The 37 Force via The Magician’s Forum - ve42.co/37Force1
Fulves, K. (1979) Self-Working Mental Magic. Dover Publications, Inc. - ve42.co/Fulves1979
Random numbers via The Jargon File at catb.org - ve42.co/Jargon
Random Number Survey by MahoganyForest via Reddit - ve42.co/RedditRndm
Prime number theorem via Wikipedia - ve42.co/WikiPNT
Grossack, C. (2023). A truly incredible fact about the number 37. Grossack.site - ve42.co/Grossack2023
Least prime factor of n via oeis.org - ve42.co/LeastPrime
Fry, H. (2017). When should you settle down? ideas.ted.com - ve42.co/Fry2017
Choosing Toilets by Numberphile -    • Choosing Toilets (mathematical extend...  
Seaton, R. (2014). The Secretary Problem Explained: Dating Mathematically. rs.io - ve42.co/Seaton2014

Images & Video:
Just 37 by Tom Magliery - ve42.co/Just37
R4000 Processor via Molecular Expressions - ve42.co/micro37
The “37” Cluster by Noel Carboni - ve42.co/NGC2169
Charles Fleischer via Wikimedia - ve42.co/Fleischer

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Directed by Emily Zhang
Written by Emily Zhang and Derek Muller
Edited by Peter Nelson
Asst edited by Luke Molloy
Animated by Fabio Albertelli, Ivy Tello, and Leigh Williamson
Illustrated by Jakub Misiek
Filmed by Emily Zhang, Casper Mebius, Derek Muller, Michael Cimpher, and David Szasz
Additional research by Gregor Čavlović
Produced by Emily Zhang, Giovanna Utichi, Han Evans, and Emily Taylor

Thumbnail contributions by Ignat Berbeci, Ren Hurley, and Peter Sheppard
Additional video/photos supplied by Getty Images and Storyblocks
Music from Epidemic Sound

All Comments (21)
  • @veritasium
    If you enjoyed hearing our expert Tom Magliery discuss his 37 collection, you can watch an extended interview with him - for free! - over on our Patreon ve42.co/PatreonTom
  • @Alexander_swe
    walking down the street and being asked to say a random number and then having the interviewer get excited over your answer has to be so confusing
  • The fact this video isn't 37mins long, is an insult to easter eggs everywhere.
  • @hooby_9066
    I do understand the logic behind the explanation. Odd numbers seem more random than even numbers, so when asked for a "random" number, it's more likely to be an odd one. 5 sits right in the center that's not feeling random, 1 is right at the start, 9 right at the end - don't feel random either. That only leaves 3 and 7. So, when people try to construct a random number between 1 and 100 in their heads, they are more likely to come up with 37 or 73, than any other number. And while the frequency of 37 and 73 coming up is highly statistically significant - 37 was still just picked somewhere around 2%. That's twice as much as it should be - but far, far less common then the video snippets of asked people would suggest. It's small enough a derivation from the expected value to be easily conceivable. What I don't understand though, is the logic behind collecting thousands of occurences of the number 37 - and claiming it shows up everywhere. Because, how do you know, that if you were collecting occurences of 36 or 38 or any other number instead, you'd be getting less? Without anything to compare it to... you could actually be finding 37 exactly as much, as you would be finding every other number. There's no telling if you are above or below what you'd expect to find... Yeah, 37 is everywhere... but so are all the other numbers between 1 and 100.
  • @CusheeFoofee
    It's called the Baader Meinhof Phenomenon. Once you become aware of something, you start seeing it everywhere.
  • @SubatomicSpeck
    "he just 37ed and walked away" was undoubtedly the funniest part of this video
  • @eliasgodwin8729
    37 and 73 being the 12th and 21st prime numbers is satisfying.
  • @Nemanja_P.
    I love how the number 69 was ignored 37% of the time in this video.
  • @TheSpannReport
    The number 37 is a number I've attached with my mother. She was only 37 years old when she passed away from Breast Cancer. So when I played sports, I wore the number 37 in tribute to her. And I still do to this day.
  • @alexander1989x
    The fact that he discarded 42 and 69 for obvious reasons is just too funny to me.
  • @DGFTardin
    I'm 37 years old. This explains everything!
  • @ScienceRevised
    The strangest thing is, Schrodinger(who was the father of quantum mechanics, a branch of pure randomness) was 37 yrs old when he gave his First breakthrough in quantum physics by giving his Schrodinger equation which is the core equation we use today, it was unusual because he has been waiting for a revolutionary idea and he went through depression all this time to give the most revolutionary equation of all time at the age 37.
  • @logdog4010
    63 has always felt like the right random number which is the required addition to 37 to make 100
  • 37 actually has a unique universal quality: it's the representation of the exact quantity of 37, a very special property that no other number has.
  • After the video finished, I got a turbotax ad that said 37% of people qualify. My mind is blown
  • @kaitlynsarah2
    "36?!?! but last year- last year I had 37!!!!" -Dudley Dursley
  • @joseavs
    If you build a square like the calculator without the zero, in the 1st row 7,8,9 in the 2nd 4,5,6 and in the 3th row 1,2,3 if write: 321123 and do the same thing with the 2nd row 456654 and then the 3th row and surprise: each of them are divisible by 37. If you do the same thing with the first column 741147 and the second column 852258 and the 3th column 963369 also are divisible by 37. it’s works with the diagonals too.
  • @rotors_taker_0h
    I watched the whole video thinking that I don't have anything related to 37 at all, then realized that I'm 37 years old.
  • @dar2
    73 is the 21st prime number. Its mirror, 37, is the 12th. And its mirror, 21, is the product of multiplying 7 and 3. In binary 73 is a palindrome, 1001001, which backwards is 1001001. -Sheldon Cooper
  • This same phenomenon hit me on my 37th birthday it just started showing up. I never thought about it before or saw anything describing it, and now this video. What threw me into believing there is something deeper was after my second bodybuilding competition. Weeks after looking over some of my stage photos I noticed that the number that they give you to place on your shorts so the judges know who you are was first 3 (at my first competition)and then my second competition which is my profile picture clear as day is the number 7. These numbers are given to the athletes in complete randomness, we have no control whatsoever on what number pins we get. Ever since I realized that this happened I have literally been puzzled but this video makes total sense. ❤