What happened when David Freiheit asked Siri what 10 trillion to the power of 1000 minus one equals? He got this very long-winded answer! To pass the time while the computer replied, he played harmonica and got a drive-through meal before he eventually gave up after 30 minutes. David said even though his phone was charging it lost 30 per cent battery and had overheated badly. Credit: YouTube/Viva Frei