For me it was 200x at 10k which I made from faucet, was getting bored so yoloed it in a single bet, the roll was est. 285x payout. Was really lucky that day , I guess 
0.1BTC primedice auto bot
martingale method is not always 2x or 3x on lose, it depends on your win multiplier and how much you want to recover on each bet you made