Japan
Every figure on this page is calculated from the game's published rules. The operator's own odds page is linked below as verification — but the working is here, on this page.
A standard entry picks 6 numbers from 43. The number of possible combinations is:
C(43, 6) = 6,096,454
After the 6 winning numbers, 1 supplementary/bonus ball is drawn from the same pool — they create extra divisions but don't change the jackpot odds.
| Division | Match | Winning combinations | Derived odds | Probability | Prize | Operator says |
|---|---|---|---|---|---|---|
| 1st prize | 6 main | 1 | 1 in 6,096,454 | 1.640e-7 | Jackpot pool share (starts ¥200 million, cap ¥600 million) | 1 in 6,096,454 |
| 2nd prize | 5 main + 1 bonus | 6 | 1 in 1,016,076 | 9.842e-7 | Pool share | — |
| 3rd prize | 5 main + 0 bonus | 216 | 1 in 28,224 | 3.543e-5 | Pool share | — |
| 4th prize | 4 main | 9,990 | 1 in 610 | 0.1639% | Pool share | — |
| 5th prize | 3 main | 155,400 | 1 in 39.23 | 2.55% | Fixed ¥1,000 | — |
"Winning combinations" counts how many of the possible outcomes land in that division. "Operator says" is the operator's published figure — shown so you can check us against them (small differences are their rounding).
Odds of winning any prize
1 in 36.81
Sum of all division probabilities — usually the number the ads quote.
Odds of the top prize
1 in 6,096,454
One standard game. Two games doubles it — and it's still tiny.
How long are these odds? Winning the top prize is about as likely as calling 22.5 coin flips in a row correctly (222.5 ≈ 6,096,454). If you bought one line every draw, at two draws a week you would expect one top-prize win roughly every 58,620 years.
Last verified: 2026-08-29