Not the odds of me losing the payout I was on, but rather hitting under 1.51 3 times in a row
1.51% * 1.51% * 1.51% = 0.000344%.
But I have seen a 20 losses in a row with x2 bets, which has a much lower chance to occur.
The highest I've seen 2x bets is 23, using my peerbet.org dicebot... It logs winning and loosing streaks.
Thet highest at x2 happened on primedice I think, went to 32.
Not seen it though. Personally, I don't use martingale or 2x much, and the worst I have had is 18.
32 red streak at 2x sounds insane, why can't anyone get half a green streak like that. Worst red I've had was 16x and best green streak was maybe 10x.
IMO, it is because many players don't even know the existence of long green streak.
If a player use auto bets, encounter a very long red streak, he will lose his balance and notice the long streak.
If a player use auto bets, encounter a very long greed streak, he won't notice anything special on his account unless he is watching the bets very closely.