Recognised as Dice notation
2d425
- 2d425
- 2 to 850
- mean 426
- mode 426
Rolling 2d425 gives a total between 2 and 850, with a mean of 426 and a standard deviation of 173.505. There are 180,625 equally likely ordered outcomes, and the most likely total is 426 at 0.235%.
The roll
Notation2d425
Dice2
Faces per die425
Minimum total2all 2 dice showing 1
Maximum total850all 2 dice showing 425
Distinct totals849
Mean426n(f + 1)/2 + modifier, exact
Variance30,104n(f² − 1)/12, exact
Standard deviation173.50504315≈
Counting the outcomes
Ordered outcomes180,625425^2, every die distinguishable
Most likely total426
Chance of that total0.235294%≈
Ways to roll it425exact count
Chance of the minimum0.00055363%≈1 in 180,625
Chance of the maximum0.00055363%≈1 in 180,625
Shape of the distribution
849 distinct totals, too many to list individually.
1st percentile61≈1.013% of rolls are this or lower
5th percentile135≈5.008% of rolls are this or lower
25th percentile302≈25.163% of rolls are this or lower
50th percentile426≈50.118% of rolls are this or lower
75th percentile550≈75.003% of rolls are this or lower
95th percentile717≈95.067% of rolls are this or lower
99th percentile791≈99.02% of rolls are this or lower
Chance of rolling at least
8797.9765%≈
21487.5001%≈
42650.1176%≈
63812.6179%≈
7652.0711%≈
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