Zoltan got the jackpot number twice in a row few many times, but he wasn't eligible for low bet amount. The min bet limit has made the Primedice jackpot a imaginary thing. And there is no way to win the jackpot easily by chasing it. Because, the probability is very low to get the 77.77 twice (in a row).

I don't think Primedice will change their jackpot model. The prize will remain attractive, but it is hard to attain. The number of bets has reached almost 110 billion at Primedice, but no one has claimed anything from the jackpot prize yet. Perhaps, many bettors has got the number with required bet amount but they didn't check their bets. I believe, we would have seen some jackpot winners if the jackpot system was automated.