4937775 - Numberphile

4937775 is a Smith Number - as are 27, 666 and infinite others!

Smith Numbers were first discovered in a phone book, explains Professor Ed Copeland from the University of Nottingham. Ed Tweets: https://twitter.com/ProfEdCopeland

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Videos by Brady Haran

• Category

  Science & Technology

[MneakySouse]

People had a lot of time on their hands before the internet was common place.

[Rogier van den Berg]

Try base 7

[Omar Quazi]

Wonderful video clip. I was so confused observing my pal go from being lame to a ladies man. He went from zero to hero. He pretended he failed to realize. He ultimately admitted it on Friday. He revealed he learned from the Jake Ayres Master Attraction Formula. Google it if you wish to learn about it... He's on a date today with a beautiful girl... Lucky man!

[lol93716]

then no, my phone number is not a Smith number

[BHFJohnny]

No, you are definitely not. I cross them also. And I write number one like 1, not like l

[BHFJohnny]

Yes, 51228923 is a prime number.

[BHFJohnny]

*Does

[BHFJohnny]

Is that mean they were bored, so they came up with these ideas? :D Because it makes sense to me

[ShubhamDomino]

A Chinese guy would want that number.

[ShubhamDomino]

6:13 is the winner.

[Tomas Agustin]

Can prime numbers be Smith numbers?