On October 4, 2015, the format changed again; the white-ball pool increased from 59 to 69 while the Powerball pool decreased from 35 to 26. While this improved the chance of winning any prize to 1 in 24, it also lengthened the jackpot odds to 1 in 292,201,338. The 4+1 prize became $50,000; the 10x PowerPlay became available in drawings with a jackpot of under $150 million. Three months later, the format produced a $1.5 billion jackpot, double the previous record, after 20 consecutive rollovers.