6667/Mistake
< 6667
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Source Work
1986: David Wells: Curious and Interesting Numbers:
- The Dictionary
- $6667$
1997: David Wells: Curious and Interesting Numbers (2nd ed.):
- The Dictionary
- $6667$
Mistake
Not a mistake as such, but:
- The patterns appearing in $6667^2$, and similarly in $3334^2$ and so on, are examples of a general rule. Any number, of however many digits, will form a pattern when a sufficiently large number of either $3$s, $6$s or $9$s are prefixed to it. Thus, $72^2 = 5184$, $672^2 = 451, 584$ and $6672^2 = 44, 515, 584$ and so on.
is so vaguely worded as to be all but useless.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $6667$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $6667$