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Aperiodvent 2018 – a month of mathematical things

We’re planning to reprise our some-but-not-every-yearly advent calendar of mathematical curiosities, starting here on 1st December and proceeding very advent-calendar-like daily thereafter. You’ll see posts appear in our site feed and on Twitter, and we’ll keep this post updated with links to each day’s post. Credit to Number Gossip for the numbery facts.

1

The only triangular cube

2

The only even prime

3

The only prime followed by a square

4

The smallest number of colours sufficient to colour any planar map

5

The number of Platonic solids

6

The smallest perfect number

7

The only prime followed by a cube

8

The only composite cube in the Fibonacci sequence

59

The smallest odd composite number

10

The base of our number system

11

The only prime comprising an even number of identical digits

12

The smallest abundant number

13

The smallest emirp

14

The smallest positive integer n such that n and $2^n$ end with the same digit

15

The smallest emirpimes

16

The number of vertices of a tesseract

17

The number of syllables in a haiku

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24

We wish you all a brilliant festive season!

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