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 2017-12-11, 15:01 #18 bsquared     "Ben" Feb 2007 329010 Posts All of the guessing strategies mentioned so far assume that when the wizard said "discover" he didn't mean "prove". Guessing random prime exponents will eventually "find" a prime number, but that fact will be unknown to the guesser. If the wizard demands proof then we are back to mass starvation, rebuilding society, etc.