Cubic Recurring Digital Invariant/Examples/55

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Example of Cubic Recurring Digital Invariant

$55$ is a cubic recurring digital invariant:

\(\ds 55: \ \ \) \(\ds 5^3 + 5^3\) \(=\) \(\ds 125 + 125\) \(\ds = 250\)
\(\ds 250: \ \ \) \(\ds 2^3 + 5^3 + 0^3\) \(=\) \(\ds 8 + 125 + 0\) \(\ds = 133\)
\(\ds 133: \ \ \) \(\ds 1^3 + 3^3 + 3^3\) \(=\) \(\ds 1 + 27 + 27\) \(\ds = 55\)

$\blacksquare$


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