Irish Lotto odds are fixed by the maths of the draw, not by luck or special number sets. With each Lotto line, you have a 1 in 10,737,573 chance of winning the jackpot.
The Lotto draws six numbers from 1 to 47 and one Bonus ball, and the more you match, the higher the prize tier you claim. The jackpot is reserved for the jackpot winners who correctly guess the six numbers, which comes out at a mind-boggling one in 10,737,573 for each line.
Your odds of matching five numbers plus the Bonus ball are 1 in 1,789,596, while matching five numbers without the Bonus ball comes in at 1 in 44,740. Matching four plus the Bonus ball happens for 1 in 17,896 lines, and four numbers alone is 1 in 918. Overall, 1 in 25.4 lines wins some kind of prize.
Lotto Plus is an optional extra game that can be added to a Lotto line. Plus 1 and Plus 2 are separate draws with fixed top prizes of €1,000,000 and €250,000, and they use the same six-from-47 format, so the odds of matching all six numbers in each are the same 1 in 10,737,573.
To compare, the EuroMillions jackpot is still way off at 1 in 139,838,160. It's a very long shot, almost 13 times longer than the Lotto's 1 in 10,737,573.