Numbers that Factorise into Sum of Digits and Reversal/Historical Note

Historical Note on Numbers that Factorise into Sum of Digits and Reversal

David Wells reports in his Curious and Interesting Numbers, 2nd ed. of $1997$ that this result was discussed by Charles Wilderman Trigg in volume $9$ of Journal of Recreational Mathematics, page $44$, but it has not been possible to corroborate this.

Sources

• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $1729$