Thanks as always to Jane Street! Here is that blog post about 63-bit numbers.
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My book is out in North America on the 21 January 2020. Pre-order now!
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Here are the numbers:

9,223,372,036,854,775,798 stops
2^63 = 9,223,372,036,854,775,808
7FFFFFFFFFFFFFF6
111111111111111111111111111111111111111111111111111111111110110

Here are the tweets:

Neil Codling @neilcodling
👀 Help, our train home is making 9 quintillion stops.
EIZrPtbW4AA3UL2.jpeg
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Daniel @drawRect
Replying to @neilcodling
Thanks for the tweet. What version of the app are you using? I thought we fixed this bug AGES ago.
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Lia Buddle @LiaBuddle
Replying to @neilcodling
Had the same thing in 2017...
EIc4CNJXsAATexO.jpeg
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Matt Parker @standupmaths
Thanks everyone who sent me this amazing tweet! So, as always it’s probably a binary overflow problem and sure enough 2^63 = 9,223,372,036,854,775,808 which is close!
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We have a free Think Maths magic trick activity that teachers can use to introduce their students to binary.
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CORRECTIONS
- None yet, let me know if you spot any mistakes!

Thanks again, as always, for Jane Street being my principal sponsor.
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Thanks to my Patreon supporters who help make these videos possible. Here is a random subset:
Icaro Fonseca
Timothy Lombard
Andy B
Nokui
Peter
Tracy Parry
Brandon
Lindsay Miller

Support my channel and I can make more maths videos:
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Filming and editing by Alex Genn-Bash
Music by Howard Carter
Design by Simon Wright

MATT PARKER: Stand-up Mathematician
Website: [ Ссылка ]
Maths book: [ Ссылка ]
Nerdy maths toys: [ Ссылка ]

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