So the main price is to work for you? hmm sureeeee... Took you some time to propose something like that. It is very well needed.
Well for fun: https://steemit.com/utopian-io/@cryptohazard/steem-bug-private-key-format-wif-errors-in-steem-js-library?sort=votes
or https://steemit.com/mathematics/@cryptohazard/the-prime-numbers-from-mystery-to-reality