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 7 numbers from 37. The number of possible combinations is:
C(37, 7) = 10,295,472
After the 7 winning numbers, 2 supplementary/bonus balls are 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 | 7 main | 1 | 1 in 10,295,472 | 9.713e-8 | Jackpot pool share (up to ¥1 billion with carryover) | 1 in 10,295,472 |
| 2nd prize | 6 main + 1 supps | 14 | 1 in 735,391 | 1.360e-6 | Pool share | 1 in 735,391 |
| 3rd prize | 6 main + 0 supps | 196 | 1 in 52,528 | 1.904e-5 | Pool share | 1 in 52,528 |
| 4th prize | 5 main | 9,135 | 1 in 1,127 | 0.0887% | Pool share | 1 in 1,127 |
| 5th prize | 4 main | 142,100 | 1 in 72.45 | 1.38% | Pool share | 1 in 72 |
| 6th prize | 3 main + ≥1 supps | 242,550 | 1 in 42.45 | 2.36% | Fixed ¥1,000 | 1 in 42 |
"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 26.13
Sum of all division probabilities — usually the number the ads quote.
Odds of the top prize
1 in 10,295,472
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 23.3 coin flips in a row correctly (223.3 ≈ 10,295,472). If you bought one line every draw, at two draws a week you would expect one top-prize win roughly every 98,995 years.
Last verified: 2026-08-29