May 2, 2009
with this equation
p.s: yes, something similar to this had come up a long time ago, but this question is different.
Cracked by: udupendra , p vs np , akhi , Dibyo , Raghuvansh , Shrey Gupta , byslexia , Higgers , u2001137 and Goyal.
Robert Morris (of the Morris worm fame) and Paul Graham who started Y Combinator a start up funding company. It is named aftet the Y Combinator function in Lambda calculus.
Y Combinator has famously funded companies like Scribd, Reddit and Fliggo.