次方 次方數

1 5

2 25

3 125

4 625

5 3,125

6 15,625

7 78,125

8 390,625

9 1,953,125

10 9,765,625

11 48,828,125

12 244,140,625

13 1,220,703,125

14 6,103,515,625

15 30,517,578,125

16 152,587,890,625

17 762,939,453,125

18 3,814,697,265,625

19 19,073,486,328,125

20 95,367,431,640,625

21 476,837,158,203,125

22 2,384,185,791,015,625

23 11,920,928,955,078,125

24 59,604,644,775,390,625

25 298,023,223,876,953,125 …… 規律：次方在3或以上時，當次方為奇數時，次方數的末3位數為“125”；當次方數為偶數時，次方數的末3位數為“625”。