Cubic Recurring Digital Invariant/Examples/160

Example of Cubic Recurring Digital Invariant

$160$ is a cubic recurring digital invariant:

$\ds 160: \ \ $

$\ds 1^3 + 6^3 + 0^3$

$=$

$\ds 1 + 216 + 0$

$\ds = 217$

$\ds 217: \ \ $

$\ds 2^3 + 1^3 + 7^3$

$=$

$\ds 8 + 1 + 343$

$\ds = 352$

$\ds 352: \ \ $

$\ds 3^3 + 5^3 + 2^3$

$=$

$\ds 27 + 125 + 8$

$\ds = 160$

$\blacksquare$

1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $153$
1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $153$