Smallest Penholodigital Square/Historical Note

Historical Note on Smallest Penholodigital Square

$139 \, 854 \, 276$ was remarked upon by John Hill in his $1716$ work Arithmetick, Both in the Theory and Practice, where he stated:

This number $139854276$ is a very remarkable Number: First, It's a Square Number; Secondly it contains $9$ Places, and they are $9$ Digits, and I think there is not another that does.

Sources

• 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $11,826$
• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $11,826$