He wouldn't have to test it on a PS3 to know it's correct as the public keys it would generate could be validated mathematically, though I'd love to see how you came up with 14 to 15 years.
OK sorry for the double post but I got a bit bored at work and decided to work out a rough estimate as to how long it would take to brute force AES256 encryption to get the private key
AES256 is 256 bit encryption so there are 2^256 combinations, that's 1.1579208923731619542357098500869x10^77
The population of the world is approx 7000000000 or 7x10^9
Assuming there are 10 processors working the problem for every person on the planet, that's 70000000000 or 7x10^10
Assuming every processor can check 100 keys per second, that's 7000000000000 or 7x10^12 keys checked per second globally (A very generous estimate)
That means it'd take 1.6541727033902313631938712144098x10^64 seconds to check all the keys
There are 31556926 seconds in a year
Which means it would take 5.2418689430974086740700637774726x10^56 years to check all the keys
Statistically we would have found the key by the time we've checked just over 50% of them so that's:
2.6209344715487043370350318887363x10^56 years
or
26209344715487043370350318887363000000000000000000 0000000 Years
So yeah it's utterly pointless to try
