Tom R

The digit 8 is three different numbers depending on how you slice it. The 9 times table doesn't just repeat. It builds perfect number pyramids. And spiders are doing geometry in the dark that humans needed centuries of maths to describe.

Counting to a million out loud, one number per second, would take 23 days without stopping. Counting to a billion would take 31 years. Two is the only even prime number in existence. Forty is the only number in English whose letters appear in alphabetical order.

Sunflower seeds arrange themselves in Fibonacci spirals without knowing what a Fibonacci number is. Multiply 21,978 by 4 and read the answer backwards. And 0.999... repeating is mathematically equal to 1. This last one has started more arguments than almost anything else in mathematics.

A pizza has height and thickness, which makes it a cylinder, not a circle. Every snowflake has exactly six sides, always, because of the shape of a water molecule. And 111,111,111 multiplied by itself produces a number that counts up to 9 and straight back down again.