Ability Googolplex: Prime Numbers: The ability to know if a number is prime as long as it is between 2 and a Googolplex^Googolplex. Activated by an urgent need to know the next prime number and not knowing it. Once activated user is compelled to write down every prime number from 2 to a Googol.
493 - Mystic Eyes of Depth Perception: The ability to know exactly how far away something is if one can see it. Gives measurements in things like cubits and stadia, so learning conversion is necessary.
104a: Should be noted, that as long as he considers himself capable of piloting/riding something, be that animal of device, he will know how to do so. Even if it is Imperial Star Destroyer.
666: Harry has these weird gates floating in white void that he sometimes dreams of. Ah. There is always that strange bleached dude with creepy grin too.
(nod to Fullmetal alchemist: Poor boy has such powers and doesn't even know what these powers are. Much less how to use them. )
semen manipulation: he has the ability to alter the thickness and consistency of his semen for soupy to a stream thick and consistent enough to hang a geo prizm from