Interesting numbers  zero  one  complex  root 2  golden ratio  e  pi  googol  infinity

0  = nothing at all  

1  = 1  
i  = √1  
√2  = 1.4142 (to 4 decimal places)  
= 1.6180 (to 4 decimal places)  
e  = 2.7183 (to 4 decimal places)  
= 3.1416 (to 4 decimal places)  
a googol  = 10^{100}  

> any number 
© Jo Edkins 2007  Return to Numbers index