Integer which is Multiplied by 9 when moving Last Digit to First/Mistake

Source Work

1997: David Wells: Curious and Interesting Numbers (2nd ed.):

The Dictionary

$10,112,359,550,561,797,752,808,988,764,044,943,820,224,719$

Mistake

The unique number which, when the last digit, $9$, is moved to the front, is the number multiplied by $9$.

Correction

The number is not actually unique.

Let $N$ be the number given.

Then the positive integers formed by concatenating the decimal representation of $N$ with itself any number of times have the same property:

$\sqbrk {NN}, \sqbrk {NNN}, \sqbrk {NNNN}, \ldots$

Sources

• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $10,112,359,550,561,797,752,808,988,764,044,943,820,224,719$