Pluperfect Digital Invariant/Examples/10 Digits/Historical Note
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Historical Note on $10$-Digit Pluperfect Digital Invariant
According to David Wells, as reported in his $1985$ work Curious and Interesting Numbers, this $10$-digit pluperfect digital invariant was discovered by Harry L. Nelson.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $4,679,307,774$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $4,679,307,774$