My favorite number is e, or 2.718 and a bunch of other numbers after it, kinda like Pi. Unlike pi however, many people don't know the signifigance of the number e. It comes up all the time in nature, and has more uses than pi, but is left out when people think of numbers because people's eyes glazed over when they indroduced pi, so when the started talking about e. People's brains were already thinking of lunch.