There are some coins that do something like this, primecoin's proof of work has to do with primes. > The innovative prime proof-of-work in Primecoin not only p

There are some coins that do something like this, primecoin's proof of work has to do with primes. > The innovative prime proof-of-work in Primecoin not only provides security and minting to the network, but also generates a special form of prime number chains of interest to mathematical research. Thus primecoin network is energy-multiuse, compared to bitcoin. This is of course very basic, but still, it's interesting. http://primecoin.io/ http://primecoin.io/