Jackpot, in full
The word comes from poker, not from lotteries. In a draw poker variant recorded from 1881, betting could only be opened by a player holding a pair of jacks or better. When nobody could open, everyone anted again and the pot carried into the next deal, growing each time. That accumulating pot was the jackpot. Slot machines borrowed the term around 1932 and the general sense of a big prize followed from there.
The advertised jackpot is not always the money available. US games publish two figures: the annuity total, which is what 30 graduated payments add up to over 29 years, and the cash value, which is the amount actually sitting in the prize pool. The headline number is the annuity total, and the cash figure has often been around half of it in recent years, though the ratio moves with interest rates. European games more often advertise a single cash figure.
A jackpot is shared when more than one ticket matches. Most games split it equally among the winning lines, so two winners take half each. That makes the number of other people playing your exact combination a real consideration, even though it has no effect on whether you win. The odds of matching are set entirely by the game's format, and they do not change when the jackpot is large.
- Lottery mechanics
- Top prize, Division 1
A worked example
A Powerball jackpot advertised at $400 million with a cash value of $190 million is one prize described two ways. Take the annuity and 30 payments arrive over 29 years, adding to $400 million. Take the cash and $190 million is paid at once, before tax. The chance of reaching either is 1 in 292,201,338, and it is the same on a $20 million night.
Sources
Jackpot entered English in 1881 as a poker term, from the rule that betting could only open on a pair of jacks or better, and was applied to slot machines from 1932.
Online Etymology Dictionary — jackpotA Powerball jackpot taken as an annuity is paid in 30 graduated payments over 29 years, the alternative being a single lump sum.
Powerball — official siteThe odds of matching all five white balls and the Powerball are 1 in 292,201,338, and they do not change with the size of the advertised jackpot.
Powerball — Prizes and odds chart
See also
Where it comes up on this site
Jackpot: frequently asked
From draw poker. In a version recorded from 1881, betting could only be opened by a player holding a pair of jacks or better, and if nobody could open, everyone anted again and the pot carried into the next deal. That growing pot was the jackpot. Slot machines took the word over around 1932, and the loose modern sense of any big win followed from the machines rather than from the card game.
It is split. Almost every game divides the top prize equally among the winning lines, so two matching tickets take half each and four take a quarter each. Heavily played combinations, dates and straight sequences especially, are therefore worth less if they land, though they are exactly as likely as anything else.
No. The odds come from the game's format and do not move with the prize.