The two numbers that matter
1 in 10,737,573
6 numbers. 1 of the 10,737,573 possible tickets.
1 in 28.71
All 8 divisions added together — 373,947 winning tickets in the full set. That is what overall odds means.
10,737,573
Every distinct way to choose 6 numbers from 47. The game's matrix is 6 of 47 + Bonus.
Every prize tier
| Division | Winning combinations | Odds | Share of tickets |
|---|---|---|---|
| 6 numbersTop prize | 1 | 1 in 10,737,573 | |
| 5 numbers + Bonus | 6 | 1 in 1,789,596 | |
| 5 numbers | 240 | 1 in 44,739.89 | |
| 4 numbers + Bonus | 600 | 1 in 17,895.96 | |
| 4 numbers | 11,700 | 1 in 917.74 | |
| 3 numbers + Bonus | 15,600 | 1 in 688.31 | |
| 3 numbers | 197,600 | 1 in 54.34 | |
| 2 numbers + Bonus | 148,200 | 1 in 72.45 |
What 1 in 10,737,573 looks like
23
Calling a fair coin correctly 23 times in a row sits at roughly the same probability. Doubling the pool costs one extra flip.
9.0
Same idea with a six-sided die: guess the face 9.0 times in succession and you have matched the jackpot's chance.
0.3 yr
Point at one random second inside 0.3 years and try to hit a second chosen in advance.
102,895 yr
One line in every draw, 2 a week, is how long it takes before a jackpot is the expected outcome rather than a surprise.
Where the jackpot number comes from
There are 10,737,573 distinct Irish Lotto tickets. Count them and you have the odds; there is no second step. The same count works for any lottery you care to check.
Choosing 6 numbers from 47 without repeats gives 10,737,573 combinations. That is the whole ticket, so that count is the whole story. One of those tickets wins the top prize.
Lower divisions work the same way, only with more tickets qualifying. Match 5 of the 6 main numbers and you get to choose which one you missed, and what you put in its place. Each of those freedoms multiplies the count, which is why the rows below the top one cover so many more tickets.
Buying more tickets adds, it does not multiply
Ten different lines give you ten of the 10,737,573 tickets, so the jackpot chance goes from 1 in 10,737,573 to 1 in 1,073,757. A hundred lines gets you to 1 in 107,375.73. The relationship is flat and boring: spend ten times as much, get ten times the chance of a number that started out very small. What that costs per extra chance is worked out in full elsewhere.
This is the honest reason we do not sell systems, wheels or hot-number lists. None of them changes the count above, and no ball in the pool is ever due. The only lever anyone actually has is how many of the 10,737,573 tickets they hold, and buying enough of them to matter costs far more than the prize is worth. The gap between what a line costs and what it returns on average is its expected value, and on every game here it is negative.
Quick picks and hand-picked numbers are the same bet
A quick pick is one of the 10,737,573 tickets. Your birthday line is one of the 10,737,573 tickets. The machine does not know which is which, and no sequence is excluded: 1-2-3-4-5-6 is exactly as likely as any scatter of numbers that looks more random.
One thing your choice does change is who you split with. Dates crowd the numbers 1 to 31, so a jackpot won on a birthday line tends to be shared more ways than one won on a line using the full range up to 47. That affects the size of a win, never the chance of one, and it is the only real difference between letting the machine choose and choosing yourself. Our Irish Lotto quick pick draws from the whole range for that reason.
Irish Lotto odds — frequently asked
1 in 10,737,573. There are 10,737,573 ways to fill in a 6 of 47 + Bonus ticket and exactly one of them is the winning line. Every one of those tickets has the same chance, including yours.
1 in 28.71, counting all 8 divisions together. The largest single contribution comes from 3 numbers, which is 1 in 54.34 on its own, and no other division is won more often.
It adds them up, nothing more. Ten different lines instead of one moves the jackpot from 1 in 10,737,573 to 1 in 1,073,757. The gain is real and it is linear, which is why it never gets you anywhere near even money.
No. The draw has no idea where a line came from, so a machine-chosen ticket and a hand-written one have identical odds.
Not of the top prize. It comes out of the same pool as the main numbers after the draw, and nobody picks it, so all it does is split some divisions into a higher and a lower rung. The jackpot is decided by the 6 main numbers alone.