Square Number ending in 9 Digits in Reverse Order/Historical Note
Jump to navigation
Jump to search
Historical Note on Square Number ending in 9 Digits in Reverse Order
According to David Wells, in his Curious and Interesting Numbers of $1986$, this factoid was noted by J.A.H. Hunter, but this needs to be corroborated.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $1,111,111,111,111,111,111$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $1,111,111,111,111,111,111$