Check out the Jane Street programs if you're considering a mathematics/finance/programming job: Here is Tim Gowers's reply to the original tweet: Start your Schanuel's Conjecture journey here: 3^3^3^3 on wolfram alpha: And for completeness, here is pi^pi^pi^pi: If you have opinions about my 2n conjecture, send an email to matt+puzzles@ Here is my Numberphile video about types of numbers. CORRECTIONS: - None yet, let me know if you spot any mistakes! Thanks to my Patreons who are also vital in keeping the videos coming. Stock audience clips don't come cheap. As always: thanks to Jane Street who support my channel. They're amazing. Editing by Alex Genn-Bash Maths graphics by Sam Hartburn and Matt Parker Music by Howard Carter Design by Simon Wright and Adam Robinson MATT PARKER: Stand-up Mathematician Website: US book: UK book: