There is a number, which, when you times it by itself, gives the answer ‘-1’.
Can you figure out what it is?
It is my favourite.

In distant second, we have:
2.7182818284590452353602874713527
For those intrigued as to why, I wrote a long blog article all about it here: http://theprovincialscientist.com/?p=1902

## Comments

Jarrodcommented on :PS 7, or 7! – not the same to a mathematician ðŸ˜‰