# Math Trivia and Answers

Math Trivia brings the fun into math problems. TriviaQN has a range of math trivia for beginners and the elite. Math trivia can be a part of family game night and even help to brush up on your math skills.

## Challenge yourself with a Math Trivia Quiz!

Easy

### Is 8128 a perfect number?

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

Easy

### Which mathematician has an Erdős number of zero (0)?

Answer: Paul Erdős, of course!
As the Erdős number describes the "collaborative distance" in authorship of mathematical papers between mathematician Paul Erdős and another person it is only natural that Paul Erdős holds this position.

Easy

### What is a positive integer that is equal to the sum of its proper positive divisors (excluding the number itself) called?

Answer: A perfect number.
You might also think of a perfect number as a number that is half the sum of all of its positive divisors, including itself! This definition is at least 2300 years old as it appears in Euclid's "Elements".

Hard

### What Erdős number does Pierre-Simon Laplace have?

Answer: Pierre-Simon Laplace has an Erdős number of at most 14!
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

Medium

### What is Bertrand Russell's Erdős number?

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

Medium

### What number comes next: 1, 11, 21, 1211, 111221, ...?

John Conway's "look and say" sequence has no digits other than 1, 2, and 3 in it, unless the seed number contains such a digit or a run of more than three of the same digit. A degenerate sequence appears with the seed of 22.

Easy

Easy

### Which mathematician published more papers during his lifetime that any other mathematician in history?

Erdős published at least 1,525 mathematical papers during his lifetime. He engaged more than 500 collaborators and devoted most of his time to mathematics up until his death in 1996 at the age of 83 years old.

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