Math Trivia and Answers

Medium

What is Bertrand Russell's Erdős number?

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Answer: 3
More information: Russell collaborated very little and no Erdös number can be found using research articles. But, as pointed out by Sachi Sri Kantha at "the Erdös number project" Russell and Albert Einstein did coauthor the Russell-Einstein "Peace" Manifesto of 1955.

Easy

What is Natalie Portman's Erdős number?

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Answer: 5
More information: Portman collaborated (using her birth name, Natalie Hershlag) with Abigail A. Baird, who has a collaboration path (Gazzaniga, Michael S. -> Victor, Jonathan D.) leading to Joseph Gillis, who has an Erdős number of 1.

Hard

What Erdős number does Pierre-Simon Laplace have?

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Answer: Pierre-Simon Laplace has an Erdős number of at most 14!
More information: According to "The Erdös number project" a path to Laplace was found by Leonid Yanushevich giving the famous mathematician an Erdös number of at most 14.

Easy

How many obvious/trivial factors does a natural number N have?

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Answer: 4 trivial factors.
More information: The positive +1 and +N and the negative -1 and -N.

Easy

Is 8128 a perfect number?

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Answer: Yes, it is!
More information: Adding up the divisors of 8128: 1 + 2 + 4 + 8 + 16 + 32 + 64 + 127 + 254 + 508 + 1016 + 2032 + 4064 = 8128

Easy

Which mathematician published more total pages of mathematics during his lifetime than any other mathematician in history?

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Answer: Leonhard Euler.
More information: Swiss-born Euler is held to be one of the greatest mathematicians in history. He made pioneering contributions to several branches of mathematics and introduced much of the modern mathematical terminology and notation.

Medium

What is the median Erdős number of Fields Medalists?

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Answer: 3
More information: Of course, as time passes, the smallest Erdős number that can still be achieved will necessarily increase, as mathematicians with low Erdős numbers die and become unavailable for collaboration.



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