This chart shows the Number Sum and Root Sum. The Number Sum is the sum of calculating the numbers in a combination of a draw result and reduce it to a single digit called "root sum". E.g., a combination of numbers 7, 8, 5, 3, 2, and 1 has a sum of 26. The root sum is 2+6 = 8. If the root sum is more than 1 digit, the root sum is computed again. Analyzing these values over time can sometimes reveal trends in sum totals that appear more frequently.
Number Sum Frequency
The graph below illustrates the trends of both the number sum and the root sum over a specified period of lottery draws. Each point on the chart represents the respective values for a single draw, allowing for a clear visual comparison of how these two metrics fluctuate over time. The number sum, typically representing the total of all drawn numbers, while the root sum—derived by reducing the number sum to a single-digit value. Together, these lines help highlight any emerging patterns, anomalies, or correlations between the overall sum of numbers and their root values throughout the analyzed period.
Most Common Number Sum
The table below displays the most frequently occurring number sums within the analyzed set of draws. It is organized into two columns: the first column lists the distinct number sums observed, while the second column shows the corresponding count of draws in which each sum appeared. This format makes it easy to identify which number sums occur most often, providing insight into potential patterns or biases in the draw outcomes. By examining this table, one can quickly determine which sums are statistically more common and may be worth monitoring in future draws.
| Number Sum | Draw Count | |
|---|---|---|
| 165 |
|
3 |
| 196 |
|
3 |
| 174 |
|
3 |
| 154 |
|
2 |
| 192 |
|
2 |
| 180 |
|
2 |
| 220 |
|
2 |
| 171 |
|
2 |
| 163 |
|
2 |
| 257 |
|
2 |
| 183 |
|
2 |
| 122 |
|
2 |
| 158 |
|
2 |
| 164 |
|
2 |
| 162 |
|
1 |
| 213 |
|
1 |
| 120 |
|
1 |
| 99 |
|
1 |
| 182 |
|
1 |
| 175 |
|
1 |
| 228 |
|
1 |
| 253 |
|
1 |
| 216 |
|
1 |
| 243 |
|
1 |
| 176 |
|
1 |
| 191 |
|
1 |
| 167 |
|
1 |
| 170 |
|
1 |
| 108 |
|
1 |
| 178 |
|
1 |
| 125 |
|
1 |
| 209 |
|
1 |
| 198 |
|
1 |
| 210 |
|
1 |
| 161 |
|
1 |
| 179 |
|
1 |
| 157 |
|
1 |
| 188 |
|
1 |
| 101 |
|
1 |
| 246 |
|
1 |
| 150 |
|
1 |
| 114 |
|
1 |
| 140 |
|
1 |
| 109 |
|
1 |
| 148 |
|
1 |
| 236 |
|
1 |
| 233 |
|
1 |
| 141 |
|
1 |
| 181 |
|
1 |
| 147 |
|
1 |
| 201 |
|
1 |
| 256 |
|
1 |
| 204 |
|
1 |
| 146 |
|
1 |
| 136 |
|
1 |
| 153 |
|
1 |
| 134 |
|
1 |
| 135 |
|
1 |
Most Common Root Sum Summary
The table and graph below presents the most common root sums observed across the analyzed draws. The table includes two columns: one for the root sum values—each derived by reducing the number sum to a single digit—and another indicating the number of draws in which each root sum occurred. This allows for easy identification of the most frequent root sums. While the pie chart visually represents the distribution of root sums, offering a clear and immediate view of how evenly or unevenly these values are spread across all draws.
| Root Sum | Draw Count | |
|---|---|---|
| 1 |
|
8 |
| 2 |
|
8 |
| 3 |
|
16 |
| 4 |
|
6 |
| 5 |
|
9 |
| 6 |
|
5 |
| 7 |
|
4 |
| 8 |
|
7 |
| 9 |
|
12 |
Format Changes in US Powerball Lottery
Since its inception on April 22, 1992, the U.S. Powerball has undergone several significant changes in format and structure. At launch, Powerball became the first lottery game to use a dual-drum format—drawing five white balls from one set and one red Powerball from another—designed to create more prize tiers. Initially, players selected 5 numbers from 45 white balls and 1 from 45 Powerballs.
In November 1997, the format changed to 5/49 + 1/42. This was followed by another change in October 2002, expanding the white ball pool to 53 while keeping the Powerball at 42. By August 2005, the white balls increased again to 55. A major change occurred in January 2009, with the matrix becoming 5/59 + 1/39. Around this time, Florida joined the game, and the drawings were moved there.
One of the most notable changes came in January 2012 when the Powerball pool was reduced to 35, while the white balls remained at 59. Another significant format change was introduced in October 2015, adjusting the matrix to 5/69 + 1/26. This increased the odds of winning smaller prizes while making the jackpot harder to win, with overall odds shifting to approximately 1 in 292 million.
| Period | Format | Powerball |
|---|---|---|
| April 1992 | 5 of 45 | 1 of 45 |
| November 1997 | 5 of 49 | 1 of 42 |
| October 2002 | 5 of 53 | 1 of 42 |
| August 2005 | 5 of 55 | 1 of 42 |
| January 2009 | 5 of 59 | 1 of 39 |
| January 2012 | 5 of 59 | 1 of 35 |
| October 2015 | 5 of 69 | 1 of 26 |
How US Powerball Lotto Format Changes Affect Your Number Strategy.
These format changes have a direct impact on statistical analysis. Mixing frequency data across different formats is not advisable because each version of the game has a different number pool and probability structure.
For example, a number that appeared frequently in the 5/49 format may have done so due to higher individual draw probability, but that same frequency can be misleading in the 5/69 formats.
Therefore, for meaningful analysis, it’s essential to treat each format as its own distinct dataset. Analyzing trends or frequencies should be restricted to results from within the same format period, especially if the goal is to inform number selection in the current game structure.