I also like comparisons to the chances of other things happening as a way to get a feel for the odds, for example you're (apparently) more likely to be killed by a vending machine (1 in 112,000,000), become US president (1 in 10,000,000), or become an astronaut (1 in 12,000,000), than win the powerball.

Of course, just because your program never found the right numbers, doesn't mean it couldn't. People do win...