Solving these mathematical problems is what's going to enable you to contribute a new block onto the blockchain. The reward for doing so is called newly minted tokens.
The first 50 mints will get a classic PC software release.. A full color box with a hologram seal of authenticity, floppy disc containing the source code with your token incorporated, user's manual / art book, a signed poster based on the output of your token, old school certificate of authenticity, stickers and other goodies.. See website for more details.