Definition:Triperfect Number/Mistake
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Source Work
1986: David Wells: Curious and Interesting Numbers:
- The Dictionary
- $120$
1997: David Wells: Curious and Interesting Numbers (2nd ed.):
- The Dictionary
- $120$
Mistake
- Only $6$ tri-perfect numbers are known:
- $120, \quad 672, \quad 523,776, \quad 459,818,240, \quad 1,476,304,896, \quad 31,001,180,160$
That last number should read $51,001,180,160$.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $120$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $120$