As you don’t have much time, can I ask that you solve Riemann’s hypothesis, its been on my mind for a while and keeps me awake at night:
‘‘The prime number theorem determines the average distribution of the primes. The Riemann hypothesis tells us about the deviation from the average. Formulated in Riemann’s 1859 paper, it asserts that all the ‘non-obvious’ zeros of the zeta function are complex numbers with real part 1/2’’
You did state you could normally crack something out in a minute or two. Good News as well as them fine chaps at the Clay Mathematics Institute, Cambridge, Massachusetts, will spunk up $1mil if you can solve it.