I'm pretty much sure this information will never be useful except for leisure maths.
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And that's how most things in the math world started
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It's the only prime number of the form a^b+b^a (2^3+3^2) and a^b-b^a(3^4-4^3)
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Could you add image descriptions to these type of post, for those who can't see the image? Otherwise you leave out the most important detail to a whole swath of people.
#a11yhttps://help.twitter.com/en/using-twitter/picture-descriptions … -
This is really important
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Here a Fibonacci puzzle:https://twitter.com/diegorattaggi/status/1230450385615228929?s=20 …
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13 and 21
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How is 21 a prime number but 19 isn't
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Actually the real consecutive Fibonacci numbers were 19 and 23, the numbers given to Crazy Dago and Leonardo’s Hat, horses racing in the Pisa Stakes in 1839. Both lost to Maltese Scoundrel. Eventually led to Italian unification.
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This is a consequence of the Fibonacci divisibility theorem: https://proofwiki.org/wiki/Divisibility_of_Fibonacci_Number … Puzzle: do you see how?
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