The answer is t16. Here is why:
=(t8)2
=(t8)*(t8)
=(t*t*t*t*t*t*t*t)*(t*t*t*t*t*t*t*t)
=t*t*t*t*t*t*t*t*t*t*t*t*t*t*t*t
=t16
9.5m questions
12.2m answers