Trap Networks

Q:	How many mathematicians does it take to screw in a light bulb?
A:	One.  He gives it to six Californians, thereby reducing the problem
	to the earlier joke.

$where {p,q} are prime, n = pq, ed is congruent to 1 mod ((p-1)(q-1)), C = M^e(mod n), M = C^d(mod n)$