Apery's Constant

apery

zeta(3)

Archimede's Constant (pi)

π / pi

3.1415927 (approximate)

Catalan's Constant

catalan

0.91596559 (approximate)

Euler's Constant

γ / euler

0.57721566 (approximate)

Pythagora's Constant (sqrt 2)

pythagoras

sqrt(2)

The Base of Natural Logarithms (e)

e

2.7182818 (approximate)

The Golden Ratio

golden / φ

(1+sqrt(5))/2