It has nothing to do with the secondary prizes, at least for Canadian 6&#x2F;49.  Most of those are fixed value, so are a increasingly small ratio of total payout as the jackpot goes up.<p>It&#x27;s because of those people who bought tickets in the many preceding weeks when there wasn&#x27;t any winners.   Those tickets are contributing to the jackpot, but have exactly 0% chance of winning, increasing the odds of the tickets for the current week.