Number which is Sum of Subfactorials of Digits/Historical Note
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Historical Note on Number which is Sum of Subfactorials of Digits
This result was apparently obtained by R.S. Dougherty, but details are hard to come by.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $148,349$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $148,349$